View Code of Problem 56

#include <stdio.h>
#include<math.h>
 int main()
 {
    int hour1,min1,sec1,hour2,min2,sec2;
    char c;
    scanf("%d %c %d %c %d   %d %c %d %c %d",&hour1,&c ,&min1,&c ,&sec1,&hour2,&c,&min2,&c,&sec2);


    int sum1=hour1*3600+min1*60+sec1;
    int sum2=hour2*3600+min2*60+sec2;
    int sum=fabs(sum1-sum2);
    int hour=sum/3600;
    int min=(sum-3600*hour)/60;
    int sec=sum-hour*3600-min*60;
    printf("%d:%02d:%02d",hour,min,sec);
    return 0;
 }