How to return a 3D array from user defined function?

I want to return a 3-dimensional array from a user-defined function into my main function.

Let's consider a simple example for any particular values of a, b and c arrays;

int*** my_function(int a[], int b[], int c[])
{
   for (int i = 0; i < 2; i++)
   {
      for (int j; j < 2; j++)
      {
         for (int k; k < 2; k++)
         {
            array[i][j][k] = a[i] * b[j] * c[k];
         }
      }
   }
   return array
}