classesin c and c++

[jamort]

ive never really used classes and im trying to make a chess game and i keep having a problem because I think its the type of information im trying to store or something... I'm trying to get this straight so i can get on with my program.... heres what im trying to do i know its wrong please help..

Code: [Select]

#include<iostream>
 
namespace chess {
          class chess_board{
                int *chess_board[8][8];
                };
}
                
               
               

[mdmedlin]

I believe the problem is how you are naming your array.  I don't think arrays in C can start with *

[chelmi]

I believe the problem is how you are naming your array.  I don't think arrays in C can start with *

He's declaring a 2D array of pointers to integers, that ok. I don't see anything wrong with this code. I actually compiled it and g++ didn't complain.
Could you give us more details? like the error message you're getting.

By the way, classes don't exist in C.

Chelmi.

[jamort]

Code: [Select]

#include<iostream>
 
namespace chess {
          class chess_board{
                int *chess_board[8][8];
                };
}
errors:

  [Linker error] undefined reference to `WinMain@16'
  ld returned 1 exit status

im using dev c++ 4.9.9.2... Im not sure what im doing wrong but as I said I've never really used classes...



edit... this is weird i add this and the code works...

Code: [Select]

#include<iostream>
 
namespace chess {
          class chess_board{
                int *chess_board[8][8];
                };
}

using namespace std;

int main(){
    cout<< "Hello there";
    cin.get();
}

[chelmi]

Your problem is not the class. The compiler is complaining because you don't have a main fuction (called WinMain in windows I guess).
Your fix is not weird at all

[jamort]

but i swear ive seen programs without functions before idk though problem solved

[chelmi]

Unless you are writing a library, every program needs a main function. But it can be in a different file.

[mdmedlin]

oh yeah the pointers I forgot about the pointers thanks for reminding me.  I don't have that much C++ experience, just what I needed to know to get through my data structures class

[jamort]

you ever applied classes to your robots?