编辑代码

#include <stdio.h>
int main () {
  int hour1,minute1;
  int hour2,minute2;
  scanf("%d %d",&hour1,&minute1);
  scanf("%d %d",&hour2,&minute2);
     
     int ih = hour2 - hour1;
      int im = minute2 - minute1;
      if(im<0){
          im = 60 +im;
          ih--;
      }
    printf("时间差事%d小时%d分。\n",ih,im);
    return 0;
}