Compiling C++ classfile

oulevon · 01-26-2005, 07:47 PM

I'm new to C++ and I can't figure out how to compile a class file. I have this simple example:

box.h

Code:

class box{

   public:
  
          int value();

};

box.cc

Code:

#include <iostream.h>

int box::value(){


          cout << "It works!" << endl;
    
           return 0;

}

I'm attempting to create a simple class box. Is there anything wrong with the code, and if not how do I compile it? I'm using g++ and I come from a java background. Thanks for any help.

leonscape · 01-26-2005, 07:50 PM

Your missing #include "box.h" in your .cc file.

oulevon · 01-26-2005, 07:54 PM

Thanks for your reply. I've included that statement.

Now I want to create a simple example to use this box class:

boxmain.cc

Code:

#include "box.h"
#include <iostream.h>

int main(){

          box b;

          b.value();

           return 0;

}

How do I compile this? I'm trying g++ -Wall -o box boxmain.cc but I'm running into errors.

Edit: I've already compiled box.cc with "g++ -c box.cc"

leonscape · 01-26-2005, 08:48 PM

cout and endl is the namespace std, so either place

using namespace std;

Below the include of iostream, or use the scope resolution std::cout and cout::endl

Also if your returning nothing from a function you can declare it void instead of int, and you don't need the return, and the boxman.cc doesn't require iostream include if you don't use any iostream stuff.

g++ -Wall -o box boxmain.cc box.cc

and to run it
./box

oulevon · 01-26-2005, 08:58 PM

Thanks for all your help.