Pass 2d array to function in C?

Question

I know it\'s simple, but I can\'t seem to make this work.

My function is like so:

 int GefMain(int array[][5])
 {
      //do stuff
      return 1;
 }
         


        

Answer 1

gcc will have extensions for what you've had (and others have had sucess with). Instead try this, it'll be more portable to other c compilers:

int g(int (* arr)[5])
{
    return 1;
}

int main()
{
    int array[1800][5];
    g(array);
    return 0;
}

or better yet;

int g(int (* arr)[5], int count)
{
    return 1;
}

int main()
{
    int array[1800][5];
    g(array, sizeof(array)/sizeof(* array));
    return 0;
}

You're getting a warning because an array of any dimension becomes a pointer when it is passed as an arguement, the above gives the compiler a clue that it should expect such.