题解 | #小乐乐定闹钟#

#include <stdio.h>

int main() {

    int hour = 0;
    int mintue = 0;
    int duringtime = 0;//睡眠时间

    scanf("%d:%d %d", &hour, &mintue, &duringtime);

    hour = (hour + duringtime / 60) % 24;//显示小时数
    mintue = mintue + duringtime % 60;//显示分钟数
    
    if (mintue >= 60)
    {
        mintue = mintue % 60;
        hour = hour + 1;
    }
    
    printf("%02d:%02d\n", hour, mintue);//左边补零

    return 0;

}