C语言第三章 循环与判断

#include 
int main()
{
	int hour1,minute1;
	int hour2,minute2;

	printf("输入时分n"); 
	scanf("%d %d",&hour1,&minute1);
	printf("输入时分n"); 
	scanf("%d %d",&hour2,&minute2);
	
	int t1=hour1-hour2;
	int t2=minute1-minute2;
	
	if(t2<0&&t1<0){
		t2=60+t2;
		t1++;
	} 
	printf("相差%d时%d分",t1,t2);	
}