7-2 然后是几点 (15分)

#include <stdio.h>

int main(){
	int begin,time,end;
	int hour,min;
	scanf("%d %d",&begin,&time);
	
	hour=begin/100;
	min=((begin%100)+time)%60;
	if(time>=0){
		hour=(hour+((begin%100)+time)/60)%24;	
	}
	else{
		min+=60;
		hour=(hour+((begin%100)+time)/60+23)%24;
	}

	printf("%d%02d",hour,min);		//%02d,确保2位数，不足0补充在左边
	
	return 0;
}