int
main (int argc, char * argv[])
{
  char *ptr;
  int total = 0;
  int i = 0;
  if (argc != 2)
  {
    printf("Enter only two arguments to the program.\n");
    return(-1);
  }
  ptr = argv[1];
  while (ptr[i] != 0)
  {
    total =  total * 10 + ptr[i] - '0';
    i++;
  }
  printf("Original number: %d\n", total);
  total = total * total;
  printf("Original number squared: %d\n", total);
  return (0);
}