CODEWITHSUNDEEP
ctimestructstopwatchelapsedtime
Jonathan
Jonathan

Reputation: 39

Elapsed Time C Program using struct

//import library
#include <stdio.h>
#include <stdlib.h>

//declare variable structure
struct time{
    int hour;
    int min;
    int sec;
}startTime, endTime, different, elapsed;

//mould struct and compute elapsedTime
struct time elapsedTime(struct time start, struct time end){

    int secondStart, secondEnd, secondDif;

    secondEnd = end.hour * 60 * 60 + end.min * 60 + end.sec;
    secondStart = start.hour * 60 * 60 + start.min * 60 + start.sec;
    if (secondEnd>secondStart)
        secondDif = secondEnd - secondStart;
    else
        secondDif = secondStart - secondEnd;

    different.hour = secondDif / 60 / 60;
    different.min = secondDif / 60;

    return different;
}

//main function
void main(){
    printf("Enter start time (Hour Minute Second) using 24 hours system : ");
    scanf("%d %d %d", startTime.hour, startTime.min, startTime.sec);

    printf("Enter end time (Hour Minute Second) using 24 hours system : ");
    scanf("%d %d %d", endTime.hour, endTime.min, endTime.sec);

    elapsed = elapsedTime(startTime, endTime);
}

Can someone help me check and run the code to check whether it is working or not?

Upvotes: 1

Views: 1024

Answers (2)

J. Toran
J. Toran

Reputation: 177

I assume you would want to calculate different.sec so I think the correct calculation of the different time is:

secPerHr = 60 * 60;
secPerMin = 60;

if (secondDif >= secPerHr) {
different.hour = secondDif / secPerHr;
secondDif -= different.hour * secPerHr;
}
if (secondDif >= secPerMin) {
different.min = secondDif / secPerMin;
secondDif -= different.min * secPerMin;
}
different.sec = secondDif;

Also, for testing purposes you would probably want to display the result in your main function.

Upvotes: 0

Embedded Software Engineer
Embedded Software Engineer

Reputation: 4906

You have a mistakes in main function, you should use in scanf int * instead of int so you must add &, you can see below:

//main function
void main(){
    printf("Enter start time (Hour Minute Second) using 24 hours system : ");
    scanf("%d %d %d", &startTime.hour, &startTime.min, &startTime.sec);

    printf("Enter end time (Hour Minute Second) using 24 hours system : ");
    scanf("%d %d %d", &endTime.hour, &endTime.min, &endTime.sec);

    elapsed = elapsedTime(startTime, endTime);
}

Upvotes: 1

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