题解 | #小乐乐定闹钟#

#include <stdio.h>
int main() {
    int h1,h2,m1,m2,h,m;
    unsigned int k;
    scanf("%d:%d %u",&h1,&m1,&k);
    h2=k/60;
    m2=k%60;
    if((m1+m2)<60){
        h=h1+h2;
        m=m1+m2;
        if((h1+h2)>=24)  //hour每24进1
            h=h%24;
    }
    else if((m1+m2)>=60){
        h=h1+h2+1;
        m=m1+m2-60; //minute 每60进1
        if((h1+h2)>=24)
            h=h%24;
    }
    printf("%02d:%02d",h,m); //%02d表示两位，不足两位左边补0
    return 0;
}