View Code of Problem 56

#include<stdio.h>
#include<string.h>
#include<math.h>

struct time {
	int hour;
	int min;
	int miao;
}t[2];

int main() {
	scanf("%d:%d:%d", &t[0].hour, &t[0].min, &t[0].miao);
	scanf("%d:%d:%d", &t[1].hour, &t[1].min, &t[1].miao);
	long int a = (3600 * t[0].hour + 60 * t[0].min + t[0].miao);
	a = fabs(a - (3600 * t[1].hour + 60 * t[1].min + t[1].miao));
	struct time tim;
	tim.hour = a / 3600;
	tim.min = a % 3600 / 60;
	tim.miao = a % 3600 % 60;
	printf("%d:%02d:%02d\n", tim.hour, tim.min, tim.miao);

}