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分钟。",t/60,t%60);
    return 0;
}