读取两个整数并相减

#include <stdio.h>
#include <stdlib.h>
int main()
{
   int diff;
   int methus;
   int you;
   char years[8];
   printf("How old are you?");
   gets_s(years);
   you=atoi(years);
   methus=69;          
   diff=methus-you;
   printf("You are %d years younger./n",diff);
   return(0);
}