View Code of Problem 56

#include<stdio.h>
#include<math.h>
#include <string.h>
#define Max 1000

int main()
{
    int h1, h2, m1, m2, s1, s2, t1, t2, del;
    t1 = t2 = 0;
    scanf("%d:%d:%d",&h1, &m1, &s1);
    scanf("%d:%d:%d",&h2, &m2, &s2);
    t1 = h1 * 3600 + m1 * 60 + s1;
    t2 = h2 * 3600 + m2 * 60 + s2;
    if(t1 > t2)
    {
        del = t1 - t2;
    }
    else
    {
        del = t2 - t1;
    }
    int a, b, c;
    a = del / 3600;
    b = del / 60 % 60;
    c = del % 60;
    printf("%02d:%02d:%02d\n",a, b, c);
    return 0;
}