View Code of Problem 56

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include<math.h>
void main() {
    int h1,m1,s1,h2,m2,s2,h,m,s;
    scanf("%d:%d:%d", &h1,&m1,&s1);
    scanf("%d:%d:%d", &h2, &m2, &s2);
    int sum1 = h1 * 60 * 60 + m1 * 60 + s1;
    int sum2 = h2 * 60 * 60 + m2 * 60 + s2;
    int sum3 = abs(sum2 - sum1);
    h = sum3 / 3600;
    m = sum3 % 3600 / 60;
    s = sum3 - h * 3600 - m * 60;
    printf("%d:%02d:%02d\n", h, m, s);
}