Programming Forums > Application Development > C++

cwl157 · Mar 6th, 2006, 11:34 AM

Quote:

Move your checking loop into a boolean "alreadyPurchased" method, then you can call that in a loop, until it returns false, or the user gets bored and turns off the computer.
This is almost exactly the same as the checking for existing employees and car makes, except you are checking for an entry not being there instead of being there.

Yea thats what i was thinking but i am confused about this method. Would it go in the car class or the purchases class?

(Toggle Plain Text)

//cs351//Carl Layton
//cs351

#include <iostream>
#include <string.h>

using namespace std;

//routines for adding an employee, displaying an employee, displaying id number
//displaying name
class employee
{
    private:
    char name[15];
    char emp_id[4];
    int loc;

    public:
    //constructor
    employee()
    {
        loc = 0;
    }

    //add an employee
    void addEmployee(employee emp[])
    {
        cout << "Please enter the employee name: ";
        cin >> emp[loc].name;
        cout << "Please enter the employee id: ";
        cin >> emp[loc].emp_id;
        cout << endl;
        loc++;
    }

  //display all employees
  void displayEmployees(employee emp[])
  {
    for(int i =0; i < loc; i++)
    {
      cout << emp[i].name << " "
           << emp[i].emp_id
           << endl;
    }
  }

  // find employee
  bool findEmp(employee emp[], char empId[4])
  {
    bool match = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(emp[i].emp_id, empId) == 0)
      {
	match = true;
        break;
      }
    }
     return match;
  }  

  //return name from employee id
  string getName(employee emp[], char empId[4])
  {
    char name[15];
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(emp[i].emp_id, empId) == 0)
	{
      	  return emp[i].name;
	}
    }
     return "";
  }

}; //end of employee  class

//routines for adding displaying cars, get for make_model and carNum
class car
{
  private:
  char make_model[15];
  char carNum[4];
  char cType[15];
  int hp;
  int loc;

  public:
  //constructor
  car()
  {
      loc = 0;
  }

  //add a car
 void  addCar(car cars[])
  {
    cout << "Enter the make_model number: ";
    cin >> cars[loc].make_model;
      cout << "Enter car number: ";
      cin >> cars[loc].carNum;
      cout << "Enter C type: ";
      cin >> cars[loc].cType;
      cout << "Enter HP number: ";
      cin >> cars[loc].hp;
      cout << endl;
      loc++;
  }

  //display cars
  void displayCar(car cars[])
  {
    for(int i =0; i < loc; i++)
    {
        cout << cars[i].make_model << " "
             << cars[i].carNum << " "
             << cars[i].cType << " "
             << cars[i].hp
	     << endl;
    }
  }

  // find car
  bool findCar(car cars[], char carnum[4])
  {
    bool match = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
      {
	  match = true;
          break;
      }
    }
    return match;
  }

  // return true if car has been purchased false otherwise
  bool alreadyPurchased(car cars[], char carnum[4])
  {
    bool purch  = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
      {
	  purch = true;
          break;
      }
    }
    return purch;
  }

  //get make_model from car number
  string getMake_model(car cars[], char carnum[4])
  {
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
	{
          return cars[i].make_model;
        }
    }  
    return "";   
  }
};  //end of car class

//add an offer, display offers, get oDate, get buyer, get price 
class offer
{
  private:
  int offerNum;
  char oDate[8];
  char buyer[14];
  int price;
  int loc;
  char car1[4];  // car number
  char emp1[4];  // employee number

  public:
  //constructor
  offer()
  {
    loc = 0;
  }

  //add offer 
  void addOffer(offer off[], employee emp[], car cars[])
  {
    cout << "Enter offer number: ";
    cin >> off[loc].offerNum;
    cout << "Enter offer date: ";
    cin >> off[loc].oDate;
    cout << "Enter buyer: ";
    cin >> off[loc].buyer;
    cout << "Enter price: ";
    cin >> off[loc].price;
    cout << "Enter existing car number: ";
    cin >> off[loc].car1;
    while(!cars->findCar(cars, off[loc].car1))
    {
	cout << "Not an existing car number! \n"
             << "Please enter an existing car number: ";
        cin >> off[loc].car1;
    }
       
    cout << "Enter existing employee id: ";
    cin >> off[loc].emp1;
    while(!emp->findEmp(emp, off[loc].emp1))
    {
        cout << "Not an existing employee id! \n"
             << "Please Enter an existing employee id: ";
        cin >> off[loc].emp1;
    }
    loc++;
  }

  //display offers
  void displayOffer(offer off[], employee emp[], car cars[])
  {
    for(int i = 0; i < loc; i++)
    {
      cout << off[i].offerNum << " "
           << off[i].oDate << " "
           << off[i].buyer << " "
           << off[i].price << " "
           << off[i].car1 << " "
	   << cars->getMake_model(cars, off[i].car1) << " "
	   << emp->getName(emp, off[i].emp1) << " "
           << endl;
    }
  }

   //get oDate from offer number
  string getOdate(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].oDate;
        }
    }  
    return "";   
  }

   //get buyer from offer number
  string getBuyer(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].buyer;
        }
    }  
    return "";   
  }

   //get price from offer number
  int getPrice(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].price;
        }
    }  
    return 0;   
  }
             
  // find offer number
   bool findOffer(offer off[], int offnum)
   {
     bool match = false;
     for(int i = 0; i < loc; i++)
     {
       if(off[i].offerNum == offnum)
       {
         match = true;
         break;
       }
     }
     return match;
   }    
};  // end offer class

//add a purchase, display a purchase, get pDate set pDate
class purchase
{
  private:
  char id[4];   // employee id number
  char car1[4];  // car number
  int off1;      // offer number
  char pDate[8];
  int loc;

  public:
  purchase()
  {
    loc = 0;
  }

  // add a purchase
  void addPurchase(purchase purch[], employee emp[], car cars[], offer off[])
  {
    int i = 0;
    cout << "Enter pDate: ";
    cin >> purch[loc].pDate;

    cout << "Enter an existing car number: ";
    cin >> purch[loc].car1;
    while(!cars->findCar(cars, purch[loc].car1))
    {
	cout << "Not an existing car number! \n"
             << "Please enter an existing car number: ";
        cin >> purch[loc].car1;
    }

    while(cars->alreadyPurchased(cars, purch[loc].car1))
    {
      cout << "Already been purchased \n"
           << "Please enter a different existing car number: ";
      cin >> purch[loc].car1;
    }
    // while(i < loc)
    //{
    //  if(strcmp(purch[loc].car1, purch[i].car1) == 0)
    //  {
    //    cout << "Already been purchased \n"
    //           << "Please enter a different existing car number: ";
    //      cin >> purch[loc].car1;
    //  }
    //   while(!cars->findCar(cars, purch[loc].car1))
    //   {
    //   cout << "Not an existing car number! \n"
    //          << "Please enter an existing car number: ";
    //     cin >> purch[loc].car1;
    //   }
    //i++;
    // }        

    cout << "Enter an existing employee id: ";
    cin >> purch[loc].id;
    while(!emp->findEmp(emp, purch[loc].id))
    {
      cout << "Not an existing employee id! \n"
           <<"Please enter an existing employee id: ";
      cin >> purch[loc].id;
    }

    cout << "Enter an existing offer number: ";
    cin >> purch[loc].off1;
    while(!off->findOffer(off, purch[loc].off1))
    {
      cout << "Not an existing offer number! \n"
           << "Please enter an existing offer number: ";
      cin >> purch[loc].off1;
    }
    loc++; 
  }

  // display purchases
  void displayPurchases(purchase purch[], employee emp[], car cars[], offer off[])
  {
    for(int i = 0; i < loc; i++)
    {
      cout << purch[i].pDate  << " "
           << purch[i].car1 << " "
           << cars->getMake_model(cars, purch[i].car1) << " "
           << emp->getName(emp, purch[i].id) << " "
           << purch[i].off1 << " "
           << off->getOdate(off, purch[i].off1) << " "
           << off->getBuyer(off, purch[i].off1) << " "
           << off->getPrice(off, purch[i].off1) << " "
           << endl;
    }
  }
};  // end of purchase class

int main()
{
  employee *emp;
  emp = new employee[100];
  car *cars;
  cars = new car[100];
  offer *off;
  off = new offer[100];
  purchase *purch;
  purch = new purchase[100];

  emp->addEmployee(emp);
  emp->displayEmployees(emp);
  cars->addCar(cars);
  cars->addCar(cars);
  cars->displayCar(cars);
  cars->addCar(cars);
  cars->addCar(cars);
  cars->addCar(cars);
  cars->displayCar(cars);
  off->addOffer(off, emp, cars);
  off->displayOffer(off, emp, cars);
  return 0;
}

//cs351//Carl Layton
//cs351

#include <iostream>
#include <string.h>

using namespace std;

//routines for adding an employee, displaying an employee, displaying id number
//displaying name
class employee
{
    private:
    char name[15];
    char emp_id[4];
    int loc;

    public:
    //constructor
    employee()
    {
        loc = 0;
    }

    //add an employee
    void addEmployee(employee emp[])
    {
        cout << "Please enter the employee name: ";
        cin >> emp[loc].name;
        cout << "Please enter the employee id: ";
        cin >> emp[loc].emp_id;
        cout << endl;
        loc++;
    }

  //display all employees
  void displayEmployees(employee emp[])
  {
    for(int i =0; i < loc; i++)
    {
      cout << emp[i].name << " "
           << emp[i].emp_id
           << endl;
    }
  }

  // find employee
  bool findEmp(employee emp[], char empId[4])
  {
    bool match = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(emp[i].emp_id, empId) == 0)
      {
	match = true;
        break;
      }
    }
     return match;
  }  

  //return name from employee id
  string getName(employee emp[], char empId[4])
  {
    char name[15];
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(emp[i].emp_id, empId) == 0)
	{
      	  return emp[i].name;
	}
    }
     return "";
  }

}; //end of employee  class

//routines for adding displaying cars, get for make_model and carNum
class car
{
  private:
  char make_model[15];
  char carNum[4];
  char cType[15];
  int hp;
  int loc;

  public:
  //constructor
  car()
  {
      loc = 0;
  }

  //add a car
 void  addCar(car cars[])
  {
    cout << "Enter the make_model number: ";
    cin >> cars[loc].make_model;
      cout << "Enter car number: ";
      cin >> cars[loc].carNum;
      cout << "Enter C type: ";
      cin >> cars[loc].cType;
      cout << "Enter HP number: ";
      cin >> cars[loc].hp;
      cout << endl;
      loc++;
  }

  //display cars
  void displayCar(car cars[])
  {
    for(int i =0; i < loc; i++)
    {
        cout << cars[i].make_model << " "
             << cars[i].carNum << " "
             << cars[i].cType << " "
             << cars[i].hp
	     << endl;
    }
  }

  // find car
  bool findCar(car cars[], char carnum[4])
  {
    bool match = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
      {
	  match = true;
          break;
      }
    }
    return match;
  }

  // return true if car has been purchased false otherwise
  bool alreadyPurchased(car cars[], char carnum[4])
  {
    bool purch  = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
      {
	  purch = true;
          break;
      }
    }
    return purch;
  }

  //get make_model from car number
  string getMake_model(car cars[], char carnum[4])
  {
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
	{
          return cars[i].make_model;
        }
    }  
    return "";   
  }
};  //end of car class

//add an offer, display offers, get oDate, get buyer, get price 
class offer
{
  private:
  int offerNum;
  char oDate[8];
  char buyer[14];
  int price;
  int loc;
  char car1[4];  // car number
  char emp1[4];  // employee number

  public:
  //constructor
  offer()
  {
    loc = 0;
  }

  //add offer 
  void addOffer(offer off[], employee emp[], car cars[])
  {
    cout << "Enter offer number: ";
    cin >> off[loc].offerNum;
    cout << "Enter offer date: ";
    cin >> off[loc].oDate;
    cout << "Enter buyer: ";
    cin >> off[loc].buyer;
    cout << "Enter price: ";
    cin >> off[loc].price;
    cout << "Enter existing car number: ";
    cin >> off[loc].car1;
    while(!cars->findCar(cars, off[loc].car1))
    {
	cout << "Not an existing car number! \n"
             << "Please enter an existing car number: ";
        cin >> off[loc].car1;
    }
       
    cout << "Enter existing employee id: ";
    cin >> off[loc].emp1;
    while(!emp->findEmp(emp, off[loc].emp1))
    {
        cout << "Not an existing employee id! \n"
             << "Please Enter an existing employee id: ";
        cin >> off[loc].emp1;
    }
    loc++;
  }

  //display offers
  void displayOffer(offer off[], employee emp[], car cars[])
  {
    for(int i = 0; i < loc; i++)
    {
      cout << off[i].offerNum << " "
           << off[i].oDate << " "
           << off[i].buyer << " "
           << off[i].price << " "
           << off[i].car1 << " "
	   << cars->getMake_model(cars, off[i].car1) << " "
	   << emp->getName(emp, off[i].emp1) << " "
           << endl;
    }
  }

   //get oDate from offer number
  string getOdate(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].oDate;
        }
    }  
    return "";   
  }

   //get buyer from offer number
  string getBuyer(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].buyer;
        }
    }  
    return "";   
  }

   //get price from offer number
  int getPrice(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].price;
        }
    }  
    return 0;   
  }
             
  // find offer number
   bool findOffer(offer off[], int offnum)
   {
     bool match = false;
     for(int i = 0; i < loc; i++)
     {
       if(off[i].offerNum == offnum)
       {
         match = true;
         break;
       }
     }
     return match;
   }    
};  // end offer class

//add a purchase, display a purchase, get pDate set pDate
class purchase
{
  private:
  char id[4];   // employee id number
  char car1[4];  // car number
  int off1;      // offer number
  char pDate[8];
  int loc;

  public:
  purchase()
  {
    loc = 0;
  }

  // add a purchase
  void addPurchase(purchase purch[], employee emp[], car cars[], offer off[])
  {
    int i = 0;
    cout << "Enter pDate: ";
    cin >> purch[loc].pDate;

    cout << "Enter an existing car number: ";
    cin >> purch[loc].car1;
    while(!cars->findCar(cars, purch[loc].car1))
    {
	cout << "Not an existing car number! \n"
             << "Please enter an existing car number: ";
        cin >> purch[loc].car1;
    }

    while(cars->alreadyPurchased(cars, purch[loc].car1))
    {
      cout << "Already been purchased \n"
           << "Please enter a different existing car number: ";
      cin >> purch[loc].car1;
    }
    // while(i < loc)
    //{
    //  if(strcmp(purch[loc].car1, purch[i].car1) == 0)
    //  {
    //    cout << "Already been purchased \n"
    //           << "Please enter a different existing car number: ";
    //      cin >> purch[loc].car1;
    //  }
    //   while(!cars->findCar(cars, purch[loc].car1))
    //   {
    //   cout << "Not an existing car number! \n"
    //          << "Please enter an existing car number: ";
    //     cin >> purch[loc].car1;
    //   }
    //i++;
    // }        

    cout << "Enter an existing employee id: ";
    cin >> purch[loc].id;
    while(!emp->findEmp(emp, purch[loc].id))
    {
      cout << "Not an existing employee id! \n"
           <<"Please enter an existing employee id: ";
      cin >> purch[loc].id;
    }

    cout << "Enter an existing offer number: ";
    cin >> purch[loc].off1;
    while(!off->findOffer(off, purch[loc].off1))
    {
      cout << "Not an existing offer number! \n"
           << "Please enter an existing offer number: ";
      cin >> purch[loc].off1;
    }
    loc++; 
  }

  // display purchases
  void displayPurchases(purchase purch[], employee emp[], car cars[], offer off[])
  {
    for(int i = 0; i < loc; i++)
    {
      cout << purch[i].pDate  << " "
           << purch[i].car1 << " "
           << cars->getMake_model(cars, purch[i].car1) << " "
           << emp->getName(emp, purch[i].id) << " "
           << purch[i].off1 << " "
           << off->getOdate(off, purch[i].off1) << " "
           << off->getBuyer(off, purch[i].off1) << " "
           << off->getPrice(off, purch[i].off1) << " "
           << endl;
    }
  }
};  // end of purchase class

int main()
{
  employee *emp;
  emp = new employee[100];
  car *cars;
  cars = new car[100];
  offer *off;
  off = new offer[100];
  purchase *purch;
  purch = new purchase[100];

  emp->addEmployee(emp);
  emp->displayEmployees(emp);
  cars->addCar(cars);
  cars->addCar(cars);
  cars->displayCar(cars);
  cars->addCar(cars);
  cars->addCar(cars);
  cars->addCar(cars);
  cars->displayCar(cars);
  off->addOffer(off, emp, cars);
  off->displayOffer(off, emp, cars);
  return 0;
}

Heres code with the method i am trying. It says its already been purchased on the first try because it just loops through and if they are the same it says its been purchased. I want it to check the cars that have been entered already as purchased. I think i am close but it still does not work right.

cwl157 · Mar 6th, 2006, 2:43 PM

alright now the program is complete with menu in main and everything. The only problem is still that one method for checking if a car has been purchased or not yet. I have an attempt but it does not work right. Here is the code with the updated main and everything.

(Toggle Plain Text)

#include <iostream>
#include <string.h>

using namespace std;

//routines for adding an employee, displaying an employee, displaying id number
//displaying name
class employee
{
    private:
    char name[15];
    char emp_id[4];
    int loc;

    public:
    //constructor
    employee()
    {
        loc = 0;
    }

    //add an employee
    void addEmployee(employee emp[])
    {
        cout << "Please enter the employee name: ";
        cin >> emp[loc].name;
        cout << "Please enter the employee id: ";
        cin >> emp[loc].emp_id;
        cout << endl;
        loc++;
    }

  //display all employees
  void displayEmployees(employee emp[])
  {
    for(int i =0; i < loc; i++)
    {
      cout << emp[i].name << " "
           << emp[i].emp_id
           << endl;
    }
  }

  // find employee
  bool findEmp(employee emp[], char empId[4])
  {
    bool match = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(emp[i].emp_id, empId) == 0)
      {
	match = true;
        break;
      }
    }
     return match;
  }  

  //return name from employee id
  string getName(employee emp[], char empId[4])
  {
    char name[15];
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(emp[i].emp_id, empId) == 0)
	{
      	  return emp[i].name;
	}
    }
     return "";
  }

}; //end of employee  class

//routines for adding displaying cars, get for make_model and carNum
class car
{
  private:
  char make_model[15];
  char carNum[4];
  char cType[15];
  int hp;
  int loc;

  public:
  //constructor
  car()
  {
      loc = 0;
  }

  //add a car
 void  addCar(car cars[])
  {
    cout << "Enter the make_model number: ";
    cin >> cars[loc].make_model;
      cout << "Enter car number: ";
      cin >> cars[loc].carNum;
      cout << "Enter C type: ";
      cin >> cars[loc].cType;
      cout << "Enter HP number: ";
      cin >> cars[loc].hp;
      cout << endl;
      loc++;
  }

  //display cars
  void displayCar(car cars[])
  {
    for(int i =0; i < loc; i++)
    {
        cout << cars[i].make_model << " "
             << cars[i].carNum << " "
             << cars[i].cType << " "
             << cars[i].hp
	     << endl;
    }
  }

  // find car
  bool findCar(car cars[], char carnum[4])
  {
    bool match = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
      {
	  match = true;
          break;
      }
    }
    return match;
  }

  // return true if car has been purchased false otherwise
  bool alreadyPurchased(car cars[], char carnum[4])
  {
    bool purch  = true;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) != 0)
      {
	  purch = false;
          break;
      }
    }
    return purch;
  }

  //get make_model from car number
  string getMake_model(car cars[], char carnum[4])
  {
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
	{
          return cars[i].make_model;
        }
    }  
    return "";   
  }
};  //end of car class

//add an offer, display offers, get oDate, get buyer, get price 
class offer
{
  private:
  int offerNum;
  char oDate[8];
  char buyer[14];
  int price;
  int loc;
  char car1[4];  // car number
  char emp1[4];  // employee number

  public:
  //constructor
  offer()
  {
    loc = 0;
  }

  //add offer 
  void addOffer(offer off[], employee emp[], car cars[])
  {
    cout << "Enter offer number: ";
    cin >> off[loc].offerNum;
    cout << "Enter offer date: ";
    cin >> off[loc].oDate;
    cout << "Enter buyer: ";
    cin >> off[loc].buyer;
    cout << "Enter price: ";
    cin >> off[loc].price;
    cout << "Enter existing car number: ";
    cin >> off[loc].car1;
    while(!cars->findCar(cars, off[loc].car1))
    {
	cout << "Not an existing car number! \n"
             << "Please enter an existing car number: ";
        cin >> off[loc].car1;
    }
       
    cout << "Enter existing employee id: ";
    cin >> off[loc].emp1;
    while(!emp->findEmp(emp, off[loc].emp1))
    {
        cout << "Not an existing employee id! \n"
             << "Please Enter an existing employee id: ";
        cin >> off[loc].emp1;
    }
    loc++;
  }

  //display offers
  void displayOffer(offer off[], employee emp[], car cars[])
  {
    for(int i = 0; i < loc; i++)
    {
      cout << off[i].offerNum << " "
           << off[i].oDate << " "
           << off[i].buyer << " "
           << off[i].price << " "
           << off[i].car1 << " "
	   << cars->getMake_model(cars, off[i].car1) << " "
	   << emp->getName(emp, off[i].emp1) << " "
           << endl;
    }
  }

   //get oDate from offer number
  string getOdate(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].oDate;
        }
    }  
    return "";   
  }

   //get buyer from offer number
  string getBuyer(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].buyer;
        }
    }  
    return "";   
  }

   //get price from offer number
  int getPrice(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].price;
        }
    }  
    return 0;   
  }
             
  // find offer number
   bool findOffer(offer off[], int offnum)
   {
     bool match = false;
     for(int i = 0; i < loc; i++)
     {
       if(off[i].offerNum == offnum)
       {
         match = true;
         break;
       }
     }
     return match;
   }    
};  // end offer class

//add a purchase, display a purchase, get pDate set pDate
class purchase
{
  private:
  char id[4];   // employee id number
  char car1[4];  // car number
  int off1;      // offer number
  char pDate[8];
  int loc;

  public:
  purchase()
  {
    loc = 0;
  }

  // add a purchase
  void addPurchase(purchase purch[], employee emp[], car cars[], offer off[])
  {
    int i = 0;
    cout << "Enter pDate: ";
    cin >> purch[loc].pDate;

    cout << "Enter an existing car number: ";
    cin >> purch[loc].car1;
    while(!cars->findCar(cars, purch[loc].car1))
    {
	cout << "Not an existing car number! \n"
             << "Please enter an existing car number: ";
        cin >> purch[loc].car1;
    }

    while(cars->alreadyPurchased(cars, purch[loc].car1))
    {
      cout << "Already been purchased \n"
           << "Please enter a different existing car number: ";
      cin >> purch[loc].car1;
    }
    // while(i < loc)
    //{
    //  if(strcmp(purch[loc].car1, purch[i].car1) == 0)
    //  {
    //    cout << "Already been purchased \n"
    //           << "Please enter a different existing car number: ";
    //      cin >> purch[loc].car1;
    //  }
    //   while(!cars->findCar(cars, purch[loc].car1))
    //   {
    //   cout << "Not an existing car number! \n"
    //          << "Please enter an existing car number: ";
    //     cin >> purch[loc].car1;
    //   }
    //i++;
    // }        

    cout << "Enter an existing employee id: ";
    cin >> purch[loc].id;
    while(!emp->findEmp(emp, purch[loc].id))
    {
      cout << "Not an existing employee id! \n"
           <<"Please enter an existing employee id: ";
      cin >> purch[loc].id;
    }

    cout << "Enter an existing offer number: ";
    cin >> purch[loc].off1;
    while(!off->findOffer(off, purch[loc].off1))
    {
      cout << "Not an existing offer number! \n"
           << "Please enter an existing offer number: ";
      cin >> purch[loc].off1;
    }
    loc++; 
  }

  // display purchases
  void displayPurchases(purchase purch[], employee emp[], car cars[], offer off[])
  {
    for(int i = 0; i < loc; i++)
    {
      cout << purch[i].pDate  << " "
           << purch[i].car1 << " "
           << cars->getMake_model(cars, purch[i].car1) << " "
           << emp->getName(emp, purch[i].id) << " "
           << purch[i].off1 << " "
           << off->getOdate(off, purch[i].off1) << " "
           << off->getBuyer(off, purch[i].off1) << " "
           << off->getPrice(off, purch[i].off1) << " "
           << endl;
    }
  }
};  // end of purchase class

int main()
{
  employee *emp;
  emp = new employee[100];
  car *cars;
  cars = new car[100];
  offer *off;
  off = new offer[100];
  purchase *purch;
  purch = new purchase[100];
  int option;

  while(option != 9)
  {
    cout << endl;
    cout << "1. Add an employee \n"
         << "2. Display employees \n"
         << "3. Add a car \n"
         << "4. Display cars \n"
         << "5. Add an offer \n"
         << "6. Display offers \n"
         << "7. Add a purchase \n"
         << "8. Display purchases \n"
         << "9. Quit \n"
         << "Please make a selection: ";
    cin >> option;
    cout << endl;

    if(option == 1)
      emp->addEmployee(emp);
    if(option == 2)
      emp->displayEmployees(emp);
    if(option == 3)
      cars->addCar(cars);
    if(option == 4)
      cars->displayCar(cars);
    if(option == 5)
      off->addOffer(off, emp, cars);
    if(option == 6)
      off->displayOffer(off, emp, cars);
    if(option == 7)
      purch->addPurchase(purch, emp, cars, off);
    if(option == 8)
      purch->displayPurchases(purch, emp, cars, off);
  }
  return 0;
}

#include <iostream>
#include <string.h>

using namespace std;

//routines for adding an employee, displaying an employee, displaying id number
//displaying name
class employee
{
    private:
    char name[15];
    char emp_id[4];
    int loc;

    public:
    //constructor
    employee()
    {
        loc = 0;
    }

    //add an employee
    void addEmployee(employee emp[])
    {
        cout << "Please enter the employee name: ";
        cin >> emp[loc].name;
        cout << "Please enter the employee id: ";
        cin >> emp[loc].emp_id;
        cout << endl;
        loc++;
    }

  //display all employees
  void displayEmployees(employee emp[])
  {
    for(int i =0; i < loc; i++)
    {
      cout << emp[i].name << " "
           << emp[i].emp_id
           << endl;
    }
  }

  // find employee
  bool findEmp(employee emp[], char empId[4])
  {
    bool match = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(emp[i].emp_id, empId) == 0)
      {
	match = true;
        break;
      }
    }
     return match;
  }  

  //return name from employee id
  string getName(employee emp[], char empId[4])
  {
    char name[15];
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(emp[i].emp_id, empId) == 0)
	{
      	  return emp[i].name;
	}
    }
     return "";
  }

}; //end of employee  class

//routines for adding displaying cars, get for make_model and carNum
class car
{
  private:
  char make_model[15];
  char carNum[4];
  char cType[15];
  int hp;
  int loc;

  public:
  //constructor
  car()
  {
      loc = 0;
  }

  //add a car
 void  addCar(car cars[])
  {
    cout << "Enter the make_model number: ";
    cin >> cars[loc].make_model;
      cout << "Enter car number: ";
      cin >> cars[loc].carNum;
      cout << "Enter C type: ";
      cin >> cars[loc].cType;
      cout << "Enter HP number: ";
      cin >> cars[loc].hp;
      cout << endl;
      loc++;
  }

  //display cars
  void displayCar(car cars[])
  {
    for(int i =0; i < loc; i++)
    {
        cout << cars[i].make_model << " "
             << cars[i].carNum << " "
             << cars[i].cType << " "
             << cars[i].hp
	     << endl;
    }
  }

  // find car
  bool findCar(car cars[], char carnum[4])
  {
    bool match = false;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
      {
	  match = true;
          break;
      }
    }
    return match;
  }

  // return true if car has been purchased false otherwise
  bool alreadyPurchased(car cars[], char carnum[4])
  {
    bool purch  = true;
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) != 0)
      {
	  purch = false;
          break;
      }
    }
    return purch;
  }

  //get make_model from car number
  string getMake_model(car cars[], char carnum[4])
  {
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(cars[i].carNum, carnum) == 0)
	{
          return cars[i].make_model;
        }
    }  
    return "";   
  }
};  //end of car class

//add an offer, display offers, get oDate, get buyer, get price 
class offer
{
  private:
  int offerNum;
  char oDate[8];
  char buyer[14];
  int price;
  int loc;
  char car1[4];  // car number
  char emp1[4];  // employee number

  public:
  //constructor
  offer()
  {
    loc = 0;
  }

  //add offer 
  void addOffer(offer off[], employee emp[], car cars[])
  {
    cout << "Enter offer number: ";
    cin >> off[loc].offerNum;
    cout << "Enter offer date: ";
    cin >> off[loc].oDate;
    cout << "Enter buyer: ";
    cin >> off[loc].buyer;
    cout << "Enter price: ";
    cin >> off[loc].price;
    cout << "Enter existing car number: ";
    cin >> off[loc].car1;
    while(!cars->findCar(cars, off[loc].car1))
    {
	cout << "Not an existing car number! \n"
             << "Please enter an existing car number: ";
        cin >> off[loc].car1;
    }
       
    cout << "Enter existing employee id: ";
    cin >> off[loc].emp1;
    while(!emp->findEmp(emp, off[loc].emp1))
    {
        cout << "Not an existing employee id! \n"
             << "Please Enter an existing employee id: ";
        cin >> off[loc].emp1;
    }
    loc++;
  }

  //display offers
  void displayOffer(offer off[], employee emp[], car cars[])
  {
    for(int i = 0; i < loc; i++)
    {
      cout << off[i].offerNum << " "
           << off[i].oDate << " "
           << off[i].buyer << " "
           << off[i].price << " "
           << off[i].car1 << " "
	   << cars->getMake_model(cars, off[i].car1) << " "
	   << emp->getName(emp, off[i].emp1) << " "
           << endl;
    }
  }

   //get oDate from offer number
  string getOdate(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].oDate;
        }
    }  
    return "";   
  }

   //get buyer from offer number
  string getBuyer(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].buyer;
        }
    }  
    return "";   
  }

   //get price from offer number
  int getPrice(offer off[], int offnum)
  {
    for(int i = 0; i < loc; i++)
    {
      if(off[i].offerNum == offnum)
	{
          return off[i].price;
        }
    }  
    return 0;   
  }
             
  // find offer number
   bool findOffer(offer off[], int offnum)
   {
     bool match = false;
     for(int i = 0; i < loc; i++)
     {
       if(off[i].offerNum == offnum)
       {
         match = true;
         break;
       }
     }
     return match;
   }    
};  // end offer class

//add a purchase, display a purchase, get pDate set pDate
class purchase
{
  private:
  char id[4];   // employee id number
  char car1[4];  // car number
  int off1;      // offer number
  char pDate[8];
  int loc;

  public:
  purchase()
  {
    loc = 0;
  }

  // add a purchase
  void addPurchase(purchase purch[], employee emp[], car cars[], offer off[])
  {
    int i = 0;
    cout << "Enter pDate: ";
    cin >> purch[loc].pDate;

    cout << "Enter an existing car number: ";
    cin >> purch[loc].car1;
    while(!cars->findCar(cars, purch[loc].car1))
    {
	cout << "Not an existing car number! \n"
             << "Please enter an existing car number: ";
        cin >> purch[loc].car1;
    }

    while(cars->alreadyPurchased(cars, purch[loc].car1))
    {
      cout << "Already been purchased \n"
           << "Please enter a different existing car number: ";
      cin >> purch[loc].car1;
    }
    // while(i < loc)
    //{
    //  if(strcmp(purch[loc].car1, purch[i].car1) == 0)
    //  {
    //    cout << "Already been purchased \n"
    //           << "Please enter a different existing car number: ";
    //      cin >> purch[loc].car1;
    //  }
    //   while(!cars->findCar(cars, purch[loc].car1))
    //   {
    //   cout << "Not an existing car number! \n"
    //          << "Please enter an existing car number: ";
    //     cin >> purch[loc].car1;
    //   }
    //i++;
    // }        

    cout << "Enter an existing employee id: ";
    cin >> purch[loc].id;
    while(!emp->findEmp(emp, purch[loc].id))
    {
      cout << "Not an existing employee id! \n"
           <<"Please enter an existing employee id: ";
      cin >> purch[loc].id;
    }

    cout << "Enter an existing offer number: ";
    cin >> purch[loc].off1;
    while(!off->findOffer(off, purch[loc].off1))
    {
      cout << "Not an existing offer number! \n"
           << "Please enter an existing offer number: ";
      cin >> purch[loc].off1;
    }
    loc++; 
  }

  // display purchases
  void displayPurchases(purchase purch[], employee emp[], car cars[], offer off[])
  {
    for(int i = 0; i < loc; i++)
    {
      cout << purch[i].pDate  << " "
           << purch[i].car1 << " "
           << cars->getMake_model(cars, purch[i].car1) << " "
           << emp->getName(emp, purch[i].id) << " "
           << purch[i].off1 << " "
           << off->getOdate(off, purch[i].off1) << " "
           << off->getBuyer(off, purch[i].off1) << " "
           << off->getPrice(off, purch[i].off1) << " "
           << endl;
    }
  }
};  // end of purchase class

int main()
{
  employee *emp;
  emp = new employee[100];
  car *cars;
  cars = new car[100];
  offer *off;
  off = new offer[100];
  purchase *purch;
  purch = new purchase[100];
  int option;

  while(option != 9)
  {
    cout << endl;
    cout << "1. Add an employee \n"
         << "2. Display employees \n"
         << "3. Add a car \n"
         << "4. Display cars \n"
         << "5. Add an offer \n"
         << "6. Display offers \n"
         << "7. Add a purchase \n"
         << "8. Display purchases \n"
         << "9. Quit \n"
         << "Please make a selection: ";
    cin >> option;
    cout << endl;

    if(option == 1)
      emp->addEmployee(emp);
    if(option == 2)
      emp->displayEmployees(emp);
    if(option == 3)
      cars->addCar(cars);
    if(option == 4)
      cars->displayCar(cars);
    if(option == 5)
      off->addOffer(off, emp, cars);
    if(option == 6)
      off->displayOffer(off, emp, cars);
    if(option == 7)
      purch->addPurchase(purch, emp, cars, off);
    if(option == 8)
      purch->displayPurchases(purch, emp, cars, off);
  }
  return 0;
}

The Dark · Mar 6th, 2006, 3:45 PM

I would think that the "alreadyPurchased" method belongs in the your purchase class, seing as you would need to check through the purchased array. Something like:

(Toggle Plain Text)

  // return true if car has been purchased false otherwise
  bool alreadyPurchased(car purch[], char carnum[4])
  {
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(purch[i].car1, carnum) == 0)
      {
	  return true;
      }
    }
    return false;
  }

cwl157 · Mar 6th, 2006, 4:31 PM

ok thats close however the variable is wrong. car purch[] does not have a variable car1. This variable would be carNum in the car class. Do i want to make a get method for this variable and get it because its private in the car class? Or i am supposed to pass it an array of purchases from the purchase class? I think the method will work with a couple things changed to make the variables line up. I do not know how to do that though. I made it this
In car class:

(Toggle Plain Text)

 //return carNum
  string getCarNum()
  {
    return carNum;
  }

In purchase class

(Toggle Plain Text)

// return true if car has been purchased false otherwise
  bool alreadyPurchased(car purch[], char carnum[4])
  {
    for(int i = 0; i < loc; i++)
    {
      if(strcmp(purch->getCarNum(), carnum) == 0)
      {
	  return true;
      }
    }
    return false;
  }

When compiling i get this error

Quote:

prog4final.cpp: In member function ?bool purchase::alreadyPurchased(car*, char*)?:
prog4final.cpp:315: error: cannot convert ?std::string? to ?const char*? for argument ?1? to ?int strcmp(const char*, const char*)?

The Dark · Mar 6th, 2006, 5:23 PM

Yes that was a typo, all of your other methods in purch take a purchase array as the first object, why wouldn't this one? It should be

(Toggle Plain Text)

  bool alreadyPurchased(purchase purch[], char carnum[4])

I forgot to change it as it was about that time that I realised you had also used purch for the boolean local variable, so I had to remove that.

Also the fact that the parameter was called purch should have clued you in that it was of type purchase, not car.

So in short, yes it was my mistake, but you should try to understand what is in the code before copying it.

cwl157 · Mar 6th, 2006, 5:44 PM

yea i know. I realized that and got it. Now the only problem that remains is if they enter a car number that has already been purchased it does in fact correctly say it has been purchased. However, if they enter a car number that has already been purchased and then the next car they enter can be a car number that does not exist and it does not give them an error. To solve this problem would i just also put the findCar while loop after the alreadyPurchased while loop or would i put the findCar while loop inside the alreadyPurchased while loop or how would i do it so it will check to make sure the number exists? Heres the snippet of code im dealing with now.

(Toggle Plain Text)

cout << "Enter an existing car number: ";
    cin >> purch[loc].car1;
    while(!cars->findCar(cars, purch[loc].car1))
    {
	cout << "Not an existing car number! \n"
             << "Please enter an existing car number: ";
        cin >> purch[loc].car1;
    }

    while(alreadyPurchased(purch, purch[loc].car1))
    {
      cout << "Already been purchased \n"
           << "Please enter a different existing car number: ";
      cin >> purch[loc].car1;
    }

The Dark · Mar 6th, 2006, 5:55 PM

I'd probably use a while true loop

something like (pseudo code):

(Toggle Plain Text)

while(true)
{
  get car
  check car
  if not a car
  {
   display message
   continue;
  }

  check purchased
  if is purchased
  {
   display message
   continue
  }
  // All is well, so quit out of the loop
  break;
}

Edit: you might also want to put a way out of the loop if there are no cars left to be purchased, otherwise the user will be stuck in the loop forever.

cwl157 · Mar 6th, 2006, 6:12 PM

ive tested it a couple times and it has worked ok so far. I have to go somewhere now i will test it more later tonight thanks for all the help.

Mar 6th, 2006, 3:45 PM	#33
The Dark Expert Programmer Join Date: Jun 2005 Posts: 822 Rep Power: 4	I would think that the "alreadyPurchased" method belongs in the your purchase class, seing as you would need to check through the purchased array. Something like: (Toggle Plain Text) // return true if car has been purchased false otherwise bool alreadyPurchased(car purch[], char carnum[4]) { for(int i = 0; i < loc; i++) { if(strcmp(purch[i].car1, carnum) == 0) { return true; } } return false; } // return true if car has been purchased false otherwise bool alreadyPurchased(car purch[], char carnum[4]) { for(int i = 0; i < loc; i++) { if(strcmp(purch[i].car1, carnum) == 0) { return true; } } return false; }

Mar 6th, 2006, 5:23 PM	#35
The Dark Expert Programmer Join Date: Jun 2005 Posts: 822 Rep Power: 4	Yes that was a typo, all of your other methods in purch take a purchase array as the first object, why wouldn't this one? It should be (Toggle Plain Text) bool alreadyPurchased(purchase purch[], char carnum[4]) bool alreadyPurchased(purchase purch[], char carnum[4]) I forgot to change it as it was about that time that I realised you had also used purch for the boolean local variable, so I had to remove that. Also the fact that the parameter was called purch should have clued you in that it was of type purchase, not car. So in short, yes it was my mistake, but you should try to understand what is in the code before copying it.

Mar 6th, 2006, 5:44 PM	#36
cwl157 Professional Programmer Join Date: Feb 2005 Posts: 329 Rep Power: 4	yea i know. I realized that and got it. Now the only problem that remains is if they enter a car number that has already been purchased it does in fact correctly say it has been purchased. However, if they enter a car number that has already been purchased and then the next car they enter can be a car number that does not exist and it does not give them an error. To solve this problem would i just also put the findCar while loop after the alreadyPurchased while loop or would i put the findCar while loop inside the alreadyPurchased while loop or how would i do it so it will check to make sure the number exists? Heres the snippet of code im dealing with now. (Toggle Plain Text) cout << "Enter an existing car number: "; cin >> purch[loc].car1; while(!cars->findCar(cars, purch[loc].car1)) { cout << "Not an existing car number! \n" << "Please enter an existing car number: "; cin >> purch[loc].car1; } while(alreadyPurchased(purch, purch[loc].car1)) { cout << "Already been purchased \n" << "Please enter a different existing car number: "; cin >> purch[loc].car1; } cout << "Enter an existing car number: "; cin >> purch[loc].car1; while(!cars->findCar(cars, purch[loc].car1)) { cout << "Not an existing car number! \n" << "Please enter an existing car number: "; cin >> purch[loc].car1; } while(alreadyPurchased(purch, purch[loc].car1)) { cout << "Already been purchased \n" << "Please enter a different existing car number: "; cin >> purch[loc].car1; }

Mar 6th, 2006, 5:55 PM	#37
The Dark Expert Programmer Join Date: Jun 2005 Posts: 822 Rep Power: 4	I'd probably use a while true loop something like (pseudo code): (Toggle Plain Text) while(true) { get car check car if not a car { display message continue; } check purchased if is purchased { display message continue } // All is well, so quit out of the loop break; } while(true) { get car check car if not a car { display message continue; } check purchased if is purchased { display message continue } // All is well, so quit out of the loop break; } Edit: you might also want to put a way out of the loop if there are no cars left to be purchased, otherwise the user will be stuck in the loop forever.

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Mar 6th, 2006, 2:43 PM	#32
cwl157 Professional Programmer Join Date: Feb 2005 Posts: 329 Rep Power: 4	alright now the program is complete with menu in main and everything. The only problem is still that one method for checking if a car has been purchased or not yet. I have an attempt but it does not work right. Here is the code with the updated main and everything. (Toggle Plain Text) #include <iostream> #include <string.h> using namespace std; //routines for adding an employee, displaying an employee, displaying id number //displaying name class employee { private: char name[15]; char emp_id[4]; int loc; public: //constructor employee() { loc = 0; } //add an employee void addEmployee(employee emp[]) { cout << "Please enter the employee name: "; cin >> emp[loc].name; cout << "Please enter the employee id: "; cin >> emp[loc].emp_id; cout << endl; loc++; } //display all employees void displayEmployees(employee emp[]) { for(int i =0; i < loc; i++) { cout << emp[i].name << " " << emp[i].emp_id << endl; } } // find employee bool findEmp(employee emp[], char empId[4]) { bool match = false; for(int i = 0; i < loc; i++) { if(strcmp(emp[i].emp_id, empId) == 0) { match = true; break; } } return match; } //return name from employee id string getName(employee emp[], char empId[4]) { char name[15]; for(int i = 0; i < loc; i++) { if(strcmp(emp[i].emp_id, empId) == 0) { return emp[i].name; } } return ""; } }; //end of employee class //routines for adding displaying cars, get for make_model and carNum class car { private: char make_model[15]; char carNum[4]; char cType[15]; int hp; int loc; public: //constructor car() { loc = 0; } //add a car void addCar(car cars[]) { cout << "Enter the make_model number: "; cin >> cars[loc].make_model; cout << "Enter car number: "; cin >> cars[loc].carNum; cout << "Enter C type: "; cin >> cars[loc].cType; cout << "Enter HP number: "; cin >> cars[loc].hp; cout << endl; loc++; } //display cars void displayCar(car cars[]) { for(int i =0; i < loc; i++) { cout << cars[i].make_model << " " << cars[i].carNum << " " << cars[i].cType << " " << cars[i].hp << endl; } } // find car bool findCar(car cars[], char carnum[4]) { bool match = false; for(int i = 0; i < loc; i++) { if(strcmp(cars[i].carNum, carnum) == 0) { match = true; break; } } return match; } // return true if car has been purchased false otherwise bool alreadyPurchased(car cars[], char carnum[4]) { bool purch = true; for(int i = 0; i < loc; i++) { if(strcmp(cars[i].carNum, carnum) != 0) { purch = false; break; } } return purch; } //get make_model from car number string getMake_model(car cars[], char carnum[4]) { for(int i = 0; i < loc; i++) { if(strcmp(cars[i].carNum, carnum) == 0) { return cars[i].make_model; } } return ""; } }; //end of car class //add an offer, display offers, get oDate, get buyer, get price class offer { private: int offerNum; char oDate[8]; char buyer[14]; int price; int loc; char car1[4]; // car number char emp1[4]; // employee number public: //constructor offer() { loc = 0; } //add offer void addOffer(offer off[], employee emp[], car cars[]) { cout << "Enter offer number: "; cin >> off[loc].offerNum; cout << "Enter offer date: "; cin >> off[loc].oDate; cout << "Enter buyer: "; cin >> off[loc].buyer; cout << "Enter price: "; cin >> off[loc].price; cout << "Enter existing car number: "; cin >> off[loc].car1; while(!cars->findCar(cars, off[loc].car1)) { cout << "Not an existing car number! \n" << "Please enter an existing car number: "; cin >> off[loc].car1; } cout << "Enter existing employee id: "; cin >> off[loc].emp1; while(!emp->findEmp(emp, off[loc].emp1)) { cout << "Not an existing employee id! \n" << "Please Enter an existing employee id: "; cin >> off[loc].emp1; } loc++; } //display offers void displayOffer(offer off[], employee emp[], car cars[]) { for(int i = 0; i < loc; i++) { cout << off[i].offerNum << " " << off[i].oDate << " " << off[i].buyer << " " << off[i].price << " " << off[i].car1 << " " << cars->getMake_model(cars, off[i].car1) << " " << emp->getName(emp, off[i].emp1) << " " << endl; } } //get oDate from offer number string getOdate(offer off[], int offnum) { for(int i = 0; i < loc; i++) { if(off[i].offerNum == offnum) { return off[i].oDate; } } return ""; } //get buyer from offer number string getBuyer(offer off[], int offnum) { for(int i = 0; i < loc; i++) { if(off[i].offerNum == offnum) { return off[i].buyer; } } return ""; } //get price from offer number int getPrice(offer off[], int offnum) { for(int i = 0; i < loc; i++) { if(off[i].offerNum == offnum) { return off[i].price; } } return 0; } // find offer number bool findOffer(offer off[], int offnum) { bool match = false; for(int i = 0; i < loc; i++) { if(off[i].offerNum == offnum) { match = true; break; } } return match; } }; // end offer class //add a purchase, display a purchase, get pDate set pDate class purchase { private: char id[4]; // employee id number char car1[4]; // car number int off1; // offer number char pDate[8]; int loc; public: purchase() { loc = 0; } // add a purchase void addPurchase(purchase purch[], employee emp[], car cars[], offer off[]) { int i = 0; cout << "Enter pDate: "; cin >> purch[loc].pDate; cout << "Enter an existing car number: "; cin >> purch[loc].car1; while(!cars->findCar(cars, purch[loc].car1)) { cout << "Not an existing car number! \n" << "Please enter an existing car number: "; cin >> purch[loc].car1; } while(cars->alreadyPurchased(cars, purch[loc].car1)) { cout << "Already been purchased \n" << "Please enter a different existing car number: "; cin >> purch[loc].car1; } // while(i < loc) //{ // if(strcmp(purch[loc].car1, purch[i].car1) == 0) // { // cout << "Already been purchased \n" // << "Please enter a different existing car number: "; // cin >> purch[loc].car1; // } // while(!cars->findCar(cars, purch[loc].car1)) // { // cout << "Not an existing car number! \n" // << "Please enter an existing car number: "; // cin >> purch[loc].car1; // } //i++; // } cout << "Enter an existing employee id: "; cin >> purch[loc].id; while(!emp->findEmp(emp, purch[loc].id)) { cout << "Not an existing employee id! \n" <<"Please enter an existing employee id: "; cin >> purch[loc].id; } cout << "Enter an existing offer number: "; cin >> purch[loc].off1; while(!off->findOffer(off, purch[loc].off1)) { cout << "Not an existing offer number! \n" << "Please enter an existing offer number: "; cin >> purch[loc].off1; } loc++; } // display purchases void displayPurchases(purchase purch[], employee emp[], car cars[], offer off[]) { for(int i = 0; i < loc; i++) { cout << purch[i].pDate << " " << purch[i].car1 << " " << cars->getMake_model(cars, purch[i].car1) << " " << emp->getName(emp, purch[i].id) << " " << purch[i].off1 << " " << off->getOdate(off, purch[i].off1) << " " << off->getBuyer(off, purch[i].off1) << " " << off->getPrice(off, purch[i].off1) << " " << endl; } } }; // end of purchase class int main() { employee emp; emp = new employee[100]; car cars; cars = new car[100]; offer off; off = new offer[100]; purchase purch; purch = new purchase[100]; int option; while(option != 9) { cout << endl; cout << "1. Add an employee \n" << "2. Display employees \n" << "3. Add a car \n" << "4. Display cars \n" << "5. Add an offer \n" << "6. Display offers \n" << "7. Add a purchase \n" << "8. Display purchases \n" << "9. Quit \n" << "Please make a selection: "; cin >> option; cout << endl; if(option == 1) emp->addEmployee(emp); if(option == 2) emp->displayEmployees(emp); if(option == 3) cars->addCar(cars); if(option == 4) cars->displayCar(cars); if(option == 5) off->addOffer(off, emp, cars); if(option == 6) off->displayOffer(off, emp, cars); if(option == 7) purch->addPurchase(purch, emp, cars, off); if(option == 8) purch->displayPurchases(purch, emp, cars, off); } return 0; } #include <iostream> #include <string.h> using namespace std; //routines for adding an employee, displaying an employee, displaying id number //displaying name class employee { private: char name[15]; char emp_id[4]; int loc; public: //constructor employee() { loc = 0; } //add an employee void addEmployee(employee emp[]) { cout << "Please enter the employee name: "; cin >> emp[loc].name; cout << "Please enter the employee id: "; cin >> emp[loc].emp_id; cout << endl; loc++; } //display all employees void displayEmployees(employee emp[]) { for(int i =0; i < loc; i++) { cout << emp[i].name << " " << emp[i].emp_id << endl; } } // find employee bool findEmp(employee emp[], char empId[4]) { bool match = false; for(int i = 0; i < loc; i++) { if(strcmp(emp[i].emp_id, empId) == 0) { match = true; break; } } return match; } //return name from employee id string getName(employee emp[], char empId[4]) { char name[15]; for(int i = 0; i < loc; i++) { if(strcmp(emp[i].emp_id, empId) == 0) { return emp[i].name; } } return ""; } }; //end of employee class //routines for adding displaying cars, get for make_model and carNum class car { private: char make_model[15]; char carNum[4]; char cType[15]; int hp; int loc; public: //constructor car() { loc = 0; } //add a car void addCar(car cars[]) { cout << "Enter the make_model number: "; cin >> cars[loc].make_model; cout << "Enter car number: "; cin >> cars[loc].carNum; cout << "Enter C type: "; cin >> cars[loc].cType; cout << "Enter HP number: "; cin >> cars[loc].hp; cout << endl; loc++; } //display cars void displayCar(car cars[]) { for(int i =0; i < loc; i++) { cout << cars[i].make_model << " " << cars[i].carNum << " " << cars[i].cType << " " << cars[i].hp << endl; } } // find car bool findCar(car cars[], char carnum[4]) { bool match = false; for(int i = 0; i < loc; i++) { if(strcmp(cars[i].carNum, carnum) == 0) { match = true; break; } } return match; } // return true if car has been purchased false otherwise bool alreadyPurchased(car cars[], char carnum[4]) { bool purch = true; for(int i = 0; i < loc; i++) { if(strcmp(cars[i].carNum, carnum) != 0) { purch = false; break; } } return purch; } //get make_model from car number string getMake_model(car cars[], char carnum[4]) { for(int i = 0; i < loc; i++) { if(strcmp(cars[i].carNum, carnum) == 0) { return cars[i].make_model; } } return ""; } }; //end of car class //add an offer, display offers, get oDate, get buyer, get price class offer { private: int offerNum; char oDate[8]; char buyer[14]; int price; int loc; char car1[4]; // car number char emp1[4]; // employee number public: //constructor offer() { loc = 0; } //add offer void addOffer(offer off[], employee emp[], car cars[]) { cout << "Enter offer number: "; cin >> off[loc].offerNum; cout << "Enter offer date: "; cin >> off[loc].oDate; cout << "Enter buyer: "; cin >> off[loc].buyer; cout << "Enter price: "; cin >> off[loc].price; cout << "Enter existing car number: "; cin >> off[loc].car1; while(!cars->findCar(cars, off[loc].car1)) { cout << "Not an existing car number! \n" << "Please enter an existing car number: "; cin >> off[loc].car1; } cout << "Enter existing employee id: "; cin >> off[loc].emp1; while(!emp->findEmp(emp, off[loc].emp1)) { cout << "Not an existing employee id! \n" << "Please Enter an existing employee id: "; cin >> off[loc].emp1; } loc++; } //display offers void displayOffer(offer off[], employee emp[], car cars[]) { for(int i = 0; i < loc; i++) { cout << off[i].offerNum << " " << off[i].oDate << " " << off[i].buyer << " " << off[i].price << " " << off[i].car1 << " " << cars->getMake_model(cars, off[i].car1) << " " << emp->getName(emp, off[i].emp1) << " " << endl; } } //get oDate from offer number string getOdate(offer off[], int offnum) { for(int i = 0; i < loc; i++) { if(off[i].offerNum == offnum) { return off[i].oDate; } } return ""; } //get buyer from offer number string getBuyer(offer off[], int offnum) { for(int i = 0; i < loc; i++) { if(off[i].offerNum == offnum) { return off[i].buyer; } } return ""; } //get price from offer number int getPrice(offer off[], int offnum) { for(int i = 0; i < loc; i++) { if(off[i].offerNum == offnum) { return off[i].price; } } return 0; } // find offer number bool findOffer(offer off[], int offnum) { bool match = false; for(int i = 0; i < loc; i++) { if(off[i].offerNum == offnum) { match = true; break; } } return match; } }; // end offer class //add a purchase, display a purchase, get pDate set pDate class purchase { private: char id[4]; // employee id number char car1[4]; // car number int off1; // offer number char pDate[8]; int loc; public: purchase() { loc = 0; } // add a purchase void addPurchase(purchase purch[], employee emp[], car cars[], offer off[]) { int i = 0; cout << "Enter pDate: "; cin >> purch[loc].pDate; cout << "Enter an existing car number: "; cin >> purch[loc].car1; while(!cars->findCar(cars, purch[loc].car1)) { cout << "Not an existing car number! \n" << "Please enter an existing car number: "; cin >> purch[loc].car1; } while(cars->alreadyPurchased(cars, purch[loc].car1)) { cout << "Already been purchased \n" << "Please enter a different existing car number: "; cin >> purch[loc].car1; } // while(i < loc) //{ // if(strcmp(purch[loc].car1, purch[i].car1) == 0) // { // cout << "Already been purchased \n" // << "Please enter a different existing car number: "; // cin >> purch[loc].car1; // } // while(!cars->findCar(cars, purch[loc].car1)) // { // cout << "Not an existing car number! \n" // << "Please enter an existing car number: "; // cin >> purch[loc].car1; // } //i++; // } cout << "Enter an existing employee id: "; cin >> purch[loc].id; while(!emp->findEmp(emp, purch[loc].id)) { cout << "Not an existing employee id! \n" <<"Please enter an existing employee id: "; cin >> purch[loc].id; } cout << "Enter an existing offer number: "; cin >> purch[loc].off1; while(!off->findOffer(off, purch[loc].off1)) { cout << "Not an existing offer number! \n" << "Please enter an existing offer number: "; cin >> purch[loc].off1; } loc++; } // display purchases void displayPurchases(purchase purch[], employee emp[], car cars[], offer off[]) { for(int i = 0; i < loc; i++) { cout << purch[i].pDate << " " << purch[i].car1 << " " << cars->getMake_model(cars, purch[i].car1) << " " << emp->getName(emp, purch[i].id) << " " << purch[i].off1 << " " << off->getOdate(off, purch[i].off1) << " " << off->getBuyer(off, purch[i].off1) << " " << off->getPrice(off, purch[i].off1) << " " << endl; } } }; // end of purchase class int main() { employee emp; emp = new employee[100]; car cars; cars = new car[100]; offer off; off = new offer[100]; purchase purch; purch = new purchase[100]; int option; while(option != 9) { cout << endl; cout << "1. Add an employee \n" << "2. Display employees \n" << "3. Add a car \n" << "4. Display cars \n" << "5. Add an offer \n" << "6. Display offers \n" << "7. Add a purchase \n" << "8. Display purchases \n" << "9. Quit \n" << "Please make a selection: "; cin >> option; cout << endl; if(option == 1) emp->addEmployee(emp); if(option == 2) emp->displayEmployees(emp); if(option == 3) cars->addCar(cars); if(option == 4) cars->displayCar(cars); if(option == 5) off->addOffer(off, emp, cars); if(option == 6) off->displayOffer(off, emp, cars); if(option == 7) purch->addPurchase(purch, emp, cars, off); if(option == 8) purch->displayPurchases(purch, emp, cars, off); } return 0; }

Mar 6th, 2006, 6:12 PM	#38
cwl157 Professional Programmer Join Date: Feb 2005 Posts: 329 Rep Power: 4	ive tested it a couple times and it has worked ok so far. I have to go somewhere now i will test it more later tonight thanks for all the help.

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please help me to compile