Programming Forums > Application Development > C++

AbalahDoon · Jun 30th, 2005, 7:27 AM

hey im trying to find out how to write a class, say class name, that stores a name inputed by the user using member function SetName() or something.

i need to be able to prompt the user for a name, use cin>>, the pass that to SetName() to change the name stored in the class (christ i hope that made sense, im a newb so im sorry).

anyway if you can help it would be greatly appreciated, please reply, perhaps give some example code.
or you can msg me on:

aim - cplusplusnewbie
or
msn - danielmcd_5005@hotmail.com
thanks alot

DaWei · Jun 30th, 2005, 7:45 AM

Defining such a class is simple. I realize you're new, but it appears that you haven't consulted any reference material at all. Check out a book, write your code, and ask for help when your "SetName ()" method doesn't work. Here's an example, but put some sweat of your own into it!

(Toggle Plain Text)

class className 
{
private:
   ...constructors/destructors, often default
   ....private members/methods/declarations
public:
   ...public members/methods/declarations
};

Nothing fancy there, you can expect to work your way up to inheritance, etc.

skuinders · Jun 30th, 2005, 9:15 AM

Quote:

Originally Posted by DaWei

(Toggle Plain Text)

class className 
{
private:
   ...constructors/destructors, often default
   ....private members/methods/declarations
public:
   ...public members/methods/declarations
};

you want to make your constructors public, as you will not be able to instantiate the class otherwise.

DaWei · Jun 30th, 2005, 10:29 AM

Oops! I need to get my head out of where it's so dark :o . Here's an example, sorry to mislead you (slaps own wrist with a ruler just like the nuns used to do).

(Toggle Plain Text)

#include <iostream>
#include <string>

using namespace std;

class myClass
{
private:
    string myText;
public:
    myClass (){};
    myClass (string s)
    {
        myText = s;
    }
    void putText (string pT)
    {
        myText = pT;
    }
    string getText ()
    {
        return myText;
    }
};

int main (int argc, char* argv[])
{
    myClass textEntity;

    textEntity.putText ("This is my text entity");
    myClass* newEntity = new myClass ("This is the new text");

    cout << textEntity.getText () << endl 
         << newEntity->getText () << endl;
    return 0;
}

stevengs · Jun 30th, 2005, 3:15 PM

regardless of spelling, is "imputed" even a word?!?

You know, I generally prefer to list my attributes (private) first too, but every member of the crew at my new place of work unanimously agrees that the methods should be listed first (they are quite nitpicky when it comes to things like that.. sheesh). Not that it is really of much importance, but which is seen more often?

skuinders · Jun 30th, 2005, 3:32 PM

Quote:

Originally Posted by stevengs

regardless of spelling, is "imputed" even a word?!?

well typically 'input' is used as a noun but I think the computer age has brought about its use as a transitive verb. I believe it is correct (although slang-like) to say 'inputted'

I just use 'entered' to dodge the issue.

grumpy · Jul 1st, 2005, 8:02 AM

Quote:

Originally Posted by stevengs

You know, I generally prefer to list my attributes (private) first too, but every member of the crew at my new place of work unanimously agrees that the methods should be listed first (they are quite nitpicky when it comes to things like that.. sheesh). Not that it is really of much importance, but which is seen more often?

Usually I see public members (and attributes, if any) placed first in a header. The usual reason given is that private/protected members are implementation details, while public members are what is necessary to use the class. And, if more than one person uses the class, it is better to place what they need near the top of the header rather than forcing someone to scroll down through implementation details they aren't interested in.

People who care about the ability of customers to use their class library are often notable for insisting that public members appear near the top of a class declaration. That probably means that people who prefer private members near the top are more concerned with making it easier to modify the class implementation, and less concerned about the impact that has on other people who use their classes.

nnxion · Jun 30th, 2005, 8:10 PM

Quote:

Originally Posted by DaWei

(Toggle Plain Text)

class className 
{
private:
   ...constructors/destructors, often default
   ....private members/methods/declarations
public:
   ...public members/methods/declarations
};

I usually put public above private, so if you do that a lot of the time then constructors and destructors can go at the top.

AbalahDoon · Jul 1st, 2005, 12:56 AM

hey everyone thanks for all the help, great to get so many replys so quickly

DaWei · Jun 30th, 2005, 7:12 PM

"Basically", I wouldn't "utilize" it that way. Those are two of my least favorite words -- one because it's overused and the other because it's worthless. Essentially, I don't use either of them. I feel much better now that I have inputted that :p .

Jun 30th, 2005, 7:27 AM	#1
AbalahDoon Newbie Join Date: Jun 2005 Posts: 2 Rep Power: 0	newb needs help with classes and char arrays hey im trying to find out how to write a class, say class name, that stores a name inputed by the user using member function SetName() or something. i need to be able to prompt the user for a name, use cin>>, the pass that to SetName() to change the name stored in the class (christ i hope that made sense, im a newb so im sorry). anyway if you can help it would be greatly appreciated, please reply, perhaps give some example code. or you can msg me on: aim - cplusplusnewbie or msn - danielmcd_5005@hotmail.com thanks alot

Jun 30th, 2005, 7:45 AM	#2
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	Defining such a class is simple. I realize you're new, but it appears that you haven't consulted any reference material at all. Check out a book, write your code, and ask for help when your "SetName ()" method doesn't work. Here's an example, but put some sweat of your own into it! (Toggle Plain Text) class className { private: ...constructors/destructors, often default ....private members/methods/declarations public: ...public members/methods/declarations }; class className { private: ...constructors/destructors, often default ....private members/methods/declarations public: ...public members/methods/declarations }; Nothing fancy there, you can expect to work your way up to inheritance, etc. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Jun 30th, 2005, 10:29 AM	#4
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	Oops! I need to get my head out of where it's so dark :o . Here's an example, sorry to mislead you (slaps own wrist with a ruler just like the nuns used to do). (Toggle Plain Text) #include <iostream> #include <string> using namespace std; class myClass { private: string myText; public: myClass (){}; myClass (string s) { myText = s; } void putText (string pT) { myText = pT; } string getText () { return myText; } }; int main (int argc, char* argv[]) { myClass textEntity; textEntity.putText ("This is my text entity"); myClass* newEntity = new myClass ("This is the new text"); cout << textEntity.getText () << endl << newEntity->getText () << endl; return 0; } #include <iostream> #include <string> using namespace std; class myClass { private: string myText; public: myClass (){}; myClass (string s) { myText = s; } void putText (string pT) { myText = pT; } string getText () { return myText; } }; int main (int argc, char* argv[]) { myClass textEntity; textEntity.putText ("This is my text entity"); myClass* newEntity = new myClass ("This is the new text"); cout << textEntity.getText () << endl << newEntity->getText () << endl; return 0; } __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Jun 30th, 2005, 3:15 PM	#5
stevengs Professional Programmer Join Date: May 2005 Location: Bad Nauheim, Germany Posts: 436 Rep Power: 4	regardless of spelling, is "imputed" even a word?!? You know, I generally prefer to list my attributes (private) first too, but every member of the crew at my new place of work unanimously agrees that the methods should be listed first (they are quite nitpicky when it comes to things like that.. sheesh). Not that it is really of much importance, but which is seen more often? __________________ -Steven "Is this a piece of your brain?" - Basil Fawlty

Jun 30th, 2005, 7:12 PM	#10
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	"Basically", I wouldn't "utilize" it that way. Those are two of my least favorite words -- one because it's overused and the other because it's worthless. Essentially, I don't use either of them. I feel much better now that I have inputted that :p . __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Jul 1st, 2005, 12:56 AM	#9
AbalahDoon Newbie Join Date: Jun 2005 Posts: 2 Rep Power: 0	hey everyone thanks for all the help, great to get so many replys so quickly

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Programming Forums > Application Development > C++

newb needs help with classes and char arrays