handlign multidimesional arrays as function arguments and return values

Question

So I stuck at the pset3, at the place where you need to implement game of fifteen. How can I pass multidimensional array as an function argument? And how can I return multdimesional array as a function's return value?

I want to use one function to produce a 2 dimesional value and then use it as an argument for second function. But I keep getting error messages

incompatible pointer types returning 'int [d][d]' from a function with result type 'int **' [-Werror,-Wincompatible-pointer-types]

What might be the problem - the code outline looks as below

int** function1(); //Declare function that returns two dimesional array; 

void function2();//declare second function


int main(void)
{
   function2(fuinction1()); //run a function2 which uses function 1 output as an argument 
}


 int ** function1(void) //declare function11 as returning twodimesional array
   {

  return 2_dimesional_array; 
    }



    void function2(2_dimesional_array**) //function 2 uses function 1 return value
    {
        //code magic here
    }

Answer 1

Your solution seems unnecessarily cumbersome. However, to answer your question, a function cannot return an entire array. But you can certainly return a pointer to an array by declaring it as follows:

int *pointer[d][d];

You might want to consider a simpler way of going about this problem, check out this thread: pset3-fifteen-how-to-identify-board-edges-in-move-function