实验2-2-9 计算火车运行时间 (15 分)

#include <stdio.h>
int main()
{
	int h1,h2;
	scanf("%d %d",&h1,&h2);
	int t1,t2;
	t1 = (h1/100)*60 + h1%100;
	t2 = (h2/100)*60 + h2%100;

	int t = t2 - t1;
	printf("%02d:%02d",t/60,t%60);
	return 0;
	
}