题解 | #小乐乐定闹钟#

#include <stdio.h>
int main()
{
    int hour=0 ,minute=0 ,k=0;
    scanf("%d:%d %d",&hour,&minute,&k);

    minute  = minute+k;//将k累加到minute中
    hour = ((minute/60)+hour)%24;//将minute中多余的部分给到hour
    minute = minute%60;

    printf("%02d:%02d",hour,minute);
    return 0;
}