View Code of Problem 56

#include<stdio.h>
#include<ctype.h>
#include<string.h>
#include<iostream>
#include<stack>
#include<time.h>
#include<math.h>
using namespace std;
/*test*/
//#define as '\x41'
//int atoi(char s[]);
//int strlen(char s[]);
//void squeeze(char s[], char c);
//void strcat(char s[], char t[]);
//int bitcount(unsigned x);

int main()
{
	int x1, x2, x3;
	int y1, y2, y3;
	scanf("%d:%d:%d", &x1, &x2, &x3);
	scanf("%d:%d:%d", &y1, &y2, &y3);
	int z1, z2, z3;
	z1 = x1 * 3600 + x2 * 60 + x3;
	z2 = y1 * 3600 + y2 * 60 + y3;
	z3 = abs(z1 - z2);
	int a, b, c;
	a = z3 / 3600;
	b = (z3 - a * 3600) / 60;
	c = z3 - a * 3600 - b * 60;
	printf("%d:", a);
	if (b == 0)printf("00:");
	else if (b > 0 && b < 10)printf("0%d:", b);
	else printf("%b:", a);
	if (c == 0)printf("00");
	else if (c > 0 && c < 10)printf("0%d", c);
	else printf("%d\n", c);
}