#include <stdio.h>
int main () {
int hour1,minute1 ;
int hour2,minute2 ;
printf("请输入起始时间(24小时制):") ;
scanf("%d %d",&hour1,&minute1) ;
printf("请输入终止时间(24小时制):") ;
scanf("%d %d",&hour2,&minute2) ;
int T = hour1*60 + minute1 ;
int t2 = hour2*60 + minute2 ;
int t = t2-T;
if (t>=0)
printf("时间差是%d小时%d分钟",t/60,t%60 );
else
printf("时间差是%d小时%d分钟",t/60*-1,t%60*-1) ;
return 0 ;
}