Subtract matrices C code

#include<stdio.h>
#include<conio.h>
 
main()
{
   int m, n, c, d, first[10][10], second[10][10], difference[10][10];
 
   printf("Enter the number of rows and columns of matrix\n");
   scanf("%d%d",&m,&n);
   printf("Enter the elements of first matrix\n");
 
   for ( c = 0 ; c < m ; c++ )
      for ( d = 0 ; d < n ; d++ )
         scanf("%d",&first[c][d]);
 
   printf("Enter the elements of second matrix\n");
 
   for ( c = 0 ; c < m ; c++ )
      for ( d = 0 ; d < n ; d++ )
            scanf("%d",&second[c][d]);
 
   for ( c = 0 ; c < m ; c++ )
      for ( d = 0 ; d < n ; d++ )
         difference[c][d] = first[c][d] - second[c][d];
 
   printf("difference of entered matrices:-\n");
 
   for ( c = 0 ; c < m ; c++ )
   {
      for ( d = 0 ; d < n ; d++ )
         printf("%d\t",difference[c][d]);
 
      printf("\n");
   }
 
   getch();
   return 0;
}