View Code of Problem 56

#include <stdio.h>
#include <math.h>
int main()
{
    int h1,m1,s1,h2,m2,s2;
    scanf("%d:%d:%d",&h1,&m1,&s1);
    scanf("%d:%d:%d",&h2,&m2,&s2);
    int ss1=h1*3600+m1*60+s1;
    int ss2=h2*3600+m2*60+s2;
    int ss=abs(ss1-ss2);
    int h,m,s;
    h=ss/3600;
    m=(ss%3600)/60;
    s=(ss%3600)%60;
    printf("%d:%02d:%02d",h,m,s);

}