下列程序读入时间数值，将其加1秒后输出，时间格式为：hh: mm: ss，即小时；分钟；秒，当小时等于24小时，置为0。
#include<stdio.h>
struct {
int hour, minute, second;
} time;
int main(void)
{ scanf("%d: %d: %d",1);
time.second++;
if(2== 60){
3
time.second = 0;
if(time.minute == 60){
time.hour++;
time.minute = 0;
if(4)
time.hour = 0;
}
}
printf ("%d: %d: %d \n", time.hour, time.minute, time.second );
return 0;
} 
