classes and class prototype

[oulyt]

i was just reading my C++ book about classes but it did not reallly explain the file set up of them. like the class itself goes in a .h then the prototype where you define in a .cpp? and then you have where main is thats in a .cpp too. but i thought only things with int main() went in .cpp how would i call the .cpp with the prototype? or how would i know to call it. it did not in the book. (i use code::blocks)

[*brammie*]

all .cpp files in your project are compiled

so if you define everything in a .h file:

Code

GeSHi (cpp):
class CMyClass
{
    public:
        CMyClass();
        ~CMyClass();
        MyFunction();
}
 
Created by GeSHI 1.0.7.18

you can implement that in a .cpp:

Code

GeSHi (cpp):
#include "CMyClass.h"
CMyClass::CMyClass()
{
}
CMyClass::~CMyClass()
{
}
void CMyClass::MyFunction()
{
    cout << "Lol" << endl;
}
 
Created by GeSHI 1.0.7.18

and then, if you want to use your class:

Code

GeSHi (cpp):
#include "CMyClass.h"
int main()
{
    CMyClass foo;
    foo.MyFunction();
}
 
Created by GeSHI 1.0.7.18

having the definition of a class in a header makes it usable in more than 1 .cpp file
if you get errors about redifinition you can add this your header:

Code

GeSHi (cpp):
#ifndef CMYCLASS_H
#define CMYCLASS_H
//your class
#endif
 
Created by GeSHI 1.0.7.18

[oulyt]

hmm so all the .cpp are auto compiled and would i need to tell the project thing that the .cpp is part of it? or would it auto know if it was in the same folder?

and why does everyone keep using foo >.<

[ih8censorship]

and why does everyone keep using foo >.<

http://en.wikipedia.org/wiki/Foo 

[oulyt]

and why does everyone keep using foo >.<

http://en.wikipedia.org/wiki/Foo 

i see thanks its finally good to know. after running around the forum and seeing everyone useing foo