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 t1 = hour1 * 60 + minute1;
    int t2 = hour2 * 60 + minute2;
    int t = t2-t1;

    printf("时间差为%d小时%d分", t/60, t%60);
    return 0;
}