text: #include <stdio.h>
  #include "dimik.h"
  
  int main(void)
  {
      int n1 = 10, n2 = 5;
  
      printf("%d + %d = %d\n", n1, n2, add(n1, n2));
      printf("%d x %d = %d\n", n1, n2, mul(n1, n2));
  
      return 0;
  }