Programming Forums > Application Development > C++

misho · Apr 19th, 2008, 10:12 PM

You probably know this already, but vector and string are classes, so you are using classes, technically. You could make an address book program. Make a class that stores names, phone numbers, addresses, whatever, and has a few methods (maybe checking if a phone number is valid or outputting the information to a string). Then you can have a vector of these classes. Although, it may be better to have a vector of pointers to such classes.

White-Hat` · Apr 19th, 2008, 10:19 PM

Oh I know. I guess specifically a reason to create my own and use an OOP design within the program versus what I'm doing with it currently. Nonetheless, that's a great idea; just the thing to keep me busy for a while.

White-Hat` · Apr 19th, 2008, 11:31 PM

Alright, I have a question.

When using the...

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copy(names.begin(), names.end(), ostream_iterator<string>(cout, "\n"));

algorithm suggested to me, how can I apply this to my own class and member functions?

I have a class called CAddressBook and I am using a member function named print(), which prints names, addresses, etc. My first thoughts were to write a for loop incrementing an integer until all the objects were printed, but I want to break this habit.

EXAMPLE:

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copy(names.begin(), names.end(), ostream_iterator<vector/*or CAddressBook?*/>(print(), "\n"));

(I know that wouldn't work, just wanted to help pass a little more clarification along if something wasn't being understood.

Any help is appreciated.

Edit: This is what I have so far.. going to sleep for the night. If anyone has any addition comments, they're welcome.

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#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;

class CAddressBook {
private:
	string name;
	string address;
	string pn;	//phone number
	string on;	//other notes
public:
	CAddressBook(string, string, string, string);
	~CAddressBook();
	void CABoutput(void);
};
CAddressBook(string a, string b, string c, string d) {
	name = a;
	address = b;
	pn = c;
	on = d;
}
~CAddressBook() {
	cout << "Object destroyed";
}
void CABoutput(void) {
	cout << "Name: " << name << "\nAddress: " << address << "\nPhone Number: " << pn << "\nOther Notes: " << on;
	cout << endl << endl;
}
int main() {
	size_t size = 100;
	vector<CAddressBook*> a_b(size);
	string end;
	int choose;
	int i = 0;
	cout << "Welcome to your address book!\n";
	while(end != ("quit")) {
		string name = "Jon Doe";
		string address = "None entered";
		string pn = "None entered";
		string on = "None entered";

		cout << "Would you like to...>\n1.) Enter a new entry\n2.) List current entries\n3.) Quit\n" << 
			"Please enter your choise by number.\n";
		cin >> choose;
		if (choose == 1) {
			cout << "Enter name: ";
			cin >> name;
			cout << "\nEnter address: ";
			cin >> address;
			cout << "\nEnter phone number: ";
			cin >> pn;
			cout << "\nEnter other notes: ";
			cin >> on;
			cout << endl;
			a_b[i] = new CAddressBook(name, address, pn, on);
			i++;
		}
		else if (choose == 2) { //this is where I want to include the algorithm

Ooble · Apr 20th, 2008, 4:50 AM

Check this out.

White-Hat` · Apr 20th, 2008, 1:12 PM

That seems to be just what I need. Although I've never used queue's, so trying to view it in terms of how I would use it for vectors is giving me some difficulty. I'll update when I get it figured out.

Edit:

Alright, first attempt. Getting several errors, some syntax but generally it's the iterator errors I'm concerned about. Any help or pointers if I'm making obvious mistakes would be helpful.

(Toggle Plain Text)

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <iterator>

using namespace std;

class CAddressBook {
private:
	string name;
	string address;
	string pn;	//phone number
	string on;	//other notes
public:
	CAddressBook();
	CAddressBook(string, string, string, string);
	~CAddressBook();
	void CABoutput(void);
};
CAddressBook::CAddressBook() {
	name = " ";
	address = " ";
	pn = " ";
	on = " ";
}
CAddressBook::CAddressBook(string a, string b, string c, string d) {
	name = a;
	address = b;
	pn = c;
	on = d;
}
CAddressBook::~CAddressBook() {
	cout << "Object destroyed";
}
void CAddressBook::CABoutput(void) {
	cout << "Name: " << name << "\nAddress: " << address << "\nPhone Number: " << pn << "\nOther Notes: " << on;
	cout << endl << endl;
}
int main() {
	size_t size = 100;
	vector<CAddressBook*> a_b(size);
	string end;
	int choose;
	int i = 0;
	cout << "Welcome to your address book!\n";
	while(end != ("quit")) {
		string name = "Jon Doe";
		string address = "None entered";
		string pn = "None entered";
		string on = "None entered";

		cout << "Would you like to...>\n1.) Enter a new entry\n2.) List current entries\n3.) Quit\n" << 
			"Please enter your choise by number.\n";
		cin >> choose;
		if (choose == 1) {
			cout << "Enter name: ";
			cin >> name;
			cout << "\nEnter address: ";
			cin >> address;
			cout << "\nEnter phone number: ";
			cin >> pn;
			cout << "\nEnter other notes: ";
			cin >> on;
			cout << endl;
			a_b[i] = new CAddressBook(name, address, pn, on);
			i++;
		}
		else if (choose == 2) {
			for (vector<string>::iterator it = a_b.begin(); it != a_b.end(); it++) {
				a_b(it)->print();
				cout << endl;
			}
		}
		else (choose == 3) {
			end = ("quit");
		}
	}
	return 0;
}

Apr 19th, 2008, 10:12 PM	#11
misho Newbie Join Date: Apr 2008 Posts: 10 Rep Power: 0	Re: Vectors You probably know this already, but vector and string are classes, so you are using classes, technically. You could make an address book program. Make a class that stores names, phone numbers, addresses, whatever, and has a few methods (maybe checking if a phone number is valid or outputting the information to a string). Then you can have a vector of these classes. Although, it may be better to have a vector of pointers to such classes.

Apr 19th, 2008, 10:19 PM	#12
White-Hat` Programmer Join Date: Sep 2005 Location: Oopland Posts: 36 Rep Power: 0	Re: Vectors Oh I know. I guess specifically a reason to create my own and use an OOP design within the program versus what I'm doing with it currently. Nonetheless, that's a great idea; just the thing to keep me busy for a while.

Apr 19th, 2008, 11:31 PM	#13
White-Hat` Programmer Join Date: Sep 2005 Location: Oopland Posts: 36 Rep Power: 0	Re: Vectors Alright, I have a question. When using the... (Toggle Plain Text) copy(names.begin(), names.end(), ostream_iterator<string>(cout, "\n")); copy(names.begin(), names.end(), ostream_iterator<string>(cout, "\n")); algorithm suggested to me, how can I apply this to my own class and member functions? I have a class called CAddressBook and I am using a member function named print(), which prints names, addresses, etc. My first thoughts were to write a for loop incrementing an integer until all the objects were printed, but I want to break this habit. EXAMPLE: (Toggle Plain Text) copy(names.begin(), names.end(), ostream_iterator<vector/or CAddressBook?/>(print(), "\n")); copy(names.begin(), names.end(), ostream_iterator<vector/or CAddressBook?/>(print(), "\n")); (I know that wouldn't work, just wanted to help pass a little more clarification along if something wasn't being understood. Any help is appreciated. Edit: This is what I have so far.. going to sleep for the night. If anyone has any addition comments, they're welcome. (Toggle Plain Text) #include <iostream> #include <string> #include <vector> #include <algorithm> using namespace std; class CAddressBook { private: string name; string address; string pn; //phone number string on; //other notes public: CAddressBook(string, string, string, string); ~CAddressBook(); void CABoutput(void); }; CAddressBook(string a, string b, string c, string d) { name = a; address = b; pn = c; on = d; } ~CAddressBook() { cout << "Object destroyed"; } void CABoutput(void) { cout << "Name: " << name << "\nAddress: " << address << "\nPhone Number: " << pn << "\nOther Notes: " << on; cout << endl << endl; } int main() { size_t size = 100; vector<CAddressBook> a_b(size); string end; int choose; int i = 0; cout << "Welcome to your address book!\n"; while(end != ("quit")) { string name = "Jon Doe"; string address = "None entered"; string pn = "None entered"; string on = "None entered"; cout << "Would you like to...>\n1.) Enter a new entry\n2.) List current entries\n3.) Quit\n" << "Please enter your choise by number.\n"; cin >> choose; if (choose == 1) { cout << "Enter name: "; cin >> name; cout << "\nEnter address: "; cin >> address; cout << "\nEnter phone number: "; cin >> pn; cout << "\nEnter other notes: "; cin >> on; cout << endl; a_b[i] = new CAddressBook(name, address, pn, on); i++; } else if (choose == 2) { //this is where I want to include the algorithm #include <iostream> #include <string> #include <vector> #include <algorithm> using namespace std; class CAddressBook { private: string name; string address; string pn; //phone number string on; //other notes public: CAddressBook(string, string, string, string); ~CAddressBook(); void CABoutput(void); }; CAddressBook(string a, string b, string c, string d) { name = a; address = b; pn = c; on = d; } ~CAddressBook() { cout << "Object destroyed"; } void CABoutput(void) { cout << "Name: " << name << "\nAddress: " << address << "\nPhone Number: " << pn << "\nOther Notes: " << on; cout << endl << endl; } int main() { size_t size = 100; vector<CAddressBook> a_b(size); string end; int choose; int i = 0; cout << "Welcome to your address book!\n"; while(end != ("quit")) { string name = "Jon Doe"; string address = "None entered"; string pn = "None entered"; string on = "None entered"; cout << "Would you like to...>\n1.) Enter a new entry\n2.) List current entries\n3.) Quit\n" << "Please enter your choise by number.\n"; cin >> choose; if (choose == 1) { cout << "Enter name: "; cin >> name; cout << "\nEnter address: "; cin >> address; cout << "\nEnter phone number: "; cin >> pn; cout << "\nEnter other notes: "; cin >> on; cout << endl; a_b[i] = new CAddressBook(name, address, pn, on); i++; } else if (choose == 2) { //this is where I want to include the algorithm

Apr 20th, 2008, 4:50 AM	#14
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,435 Rep Power: 8	Re: Vectors Check this out. __________________ Me :: You :: Them

Apr 20th, 2008, 1:12 PM	#15
White-Hat` Programmer Join Date: Sep 2005 Location: Oopland Posts: 36 Rep Power: 0	Re: Vectors That seems to be just what I need. Although I've never used queue's, so trying to view it in terms of how I would use it for vectors is giving me some difficulty. I'll update when I get it figured out. Edit: Alright, first attempt. Getting several errors, some syntax but generally it's the iterator errors I'm concerned about. Any help or pointers if I'm making obvious mistakes would be helpful. (Toggle Plain Text) #include <iostream> #include <string> #include <vector> #include <algorithm> #include <iterator> using namespace std; class CAddressBook { private: string name; string address; string pn; //phone number string on; //other notes public: CAddressBook(); CAddressBook(string, string, string, string); ~CAddressBook(); void CABoutput(void); }; CAddressBook::CAddressBook() { name = " "; address = " "; pn = " "; on = " "; } CAddressBook::CAddressBook(string a, string b, string c, string d) { name = a; address = b; pn = c; on = d; } CAddressBook::~CAddressBook() { cout << "Object destroyed"; } void CAddressBook::CABoutput(void) { cout << "Name: " << name << "\nAddress: " << address << "\nPhone Number: " << pn << "\nOther Notes: " << on; cout << endl << endl; } int main() { size_t size = 100; vector<CAddressBook> a_b(size); string end; int choose; int i = 0; cout << "Welcome to your address book!\n"; while(end != ("quit")) { string name = "Jon Doe"; string address = "None entered"; string pn = "None entered"; string on = "None entered"; cout << "Would you like to...>\n1.) Enter a new entry\n2.) List current entries\n3.) Quit\n" << "Please enter your choise by number.\n"; cin >> choose; if (choose == 1) { cout << "Enter name: "; cin >> name; cout << "\nEnter address: "; cin >> address; cout << "\nEnter phone number: "; cin >> pn; cout << "\nEnter other notes: "; cin >> on; cout << endl; a_b[i] = new CAddressBook(name, address, pn, on); i++; } else if (choose == 2) { for (vector<string>::iterator it = a_b.begin(); it != a_b.end(); it++) { a_b(it)->print(); cout << endl; } } else (choose == 3) { end = ("quit"); } } return 0; } #include <iostream> #include <string> #include <vector> #include <algorithm> #include <iterator> using namespace std; class CAddressBook { private: string name; string address; string pn; //phone number string on; //other notes public: CAddressBook(); CAddressBook(string, string, string, string); ~CAddressBook(); void CABoutput(void); }; CAddressBook::CAddressBook() { name = " "; address = " "; pn = " "; on = " "; } CAddressBook::CAddressBook(string a, string b, string c, string d) { name = a; address = b; pn = c; on = d; } CAddressBook::~CAddressBook() { cout << "Object destroyed"; } void CAddressBook::CABoutput(void) { cout << "Name: " << name << "\nAddress: " << address << "\nPhone Number: " << pn << "\nOther Notes: " << on; cout << endl << endl; } int main() { size_t size = 100; vector<CAddressBook> a_b(size); string end; int choose; int i = 0; cout << "Welcome to your address book!\n"; while(end != ("quit")) { string name = "Jon Doe"; string address = "None entered"; string pn = "None entered"; string on = "None entered"; cout << "Would you like to...>\n1.) Enter a new entry\n2.) List current entries\n3.) Quit\n" << "Please enter your choise by number.\n"; cin >> choose; if (choose == 1) { cout << "Enter name: "; cin >> name; cout << "\nEnter address: "; cin >> address; cout << "\nEnter phone number: "; cin >> pn; cout << "\nEnter other notes: "; cin >> on; cout << endl; a_b[i] = new CAddressBook(name, address, pn, on); i++; } else if (choose == 2) { for (vector<string>::iterator it = a_b.begin(); it != a_b.end(); it++) { a_b(it)->print(); cout << endl; } } else (choose == 3) { end = ("quit"); } } return 0; } Last edited by White-Hat`; Apr 20th, 2008 at 1:40 PM.

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Programming Forums > Application Development > C++

Vectors