#include <stdio.h>
#include <stdlib.h>
int
main(int argc, char * * argv)
{
  if (argc < 2)
    {
      printf("Need a number\n");
      return EXIT_FAILURE;
    }
  int val = strtol(argv[1], NULL, 10);
  val += 10;
  printf("argv[1] = %s\n", argv[1]);
  printf("val = %d\n", val);
  return EXIT_SUCCESS;
}