C Program to Calculate Difference Between Two Time Periods
C Program to Calculate Difference Between Two Time Periods
Posted By Manisha Gupta
In this example, you'll learn to calculate the difference between two time periods using user defined - difference Between Time Period function.
Example: Calculate Difference Between Two Time Periods
#include <stdio.h>
struct TIME
{
int seconds;
int minutes;
int hours;
};
void differenceBetweenTimePeriod(struct TIME t1, struct TIME t2, struct TIME *diff);
int main()
{
struct TIME startTime, stopTime, diff;
printf("Enter start time: \n");
printf("Enter hours, minutes and seconds respectively: ");
scanf("%d %d %d", &startTime.hours, &startTime.minutes, &startTime.seconds);
printf("Enter stop time: \n");
printf("Enter hours, minutes and seconds respectively: ");
scanf("%d %d %d", &stopTime.hours, &stopTime.minutes, &stopTime.seconds);
// Calculate the difference between the start and stop time period.
differenceBetweenTimePeriod(startTime, stopTime, &diff);
printf("\nTIME DIFFERENCE: %d:%d:%d - ", startTime.hours, startTime.minutes, startTime.seconds);
printf("%d:%d:%d ", stopTime.hours, stopTime.minutes, stopTime.seconds);
printf("= %d:%d:%d\n", diff.hours, diff.minutes, diff.seconds);
return 0;
}
void differenceBetweenTimePeriod(struct TIME start, struct TIME stop, struct TIME *diff)
{
if(stop.seconds > start.seconds){
--start.minutes;
start.seconds += 60;
}
diff->seconds = start.seconds - stop.seconds;
if(stop.minutes > start.minutes){
--start.hours;
start.minutes += 60;
}
diff->minutes = start.minutes - stop.minutes;
diff->hours = start.hours - stop.hours;
}
Output
Enter start time:
Enter hours, minutes and seconds respectively: 12
34
55
Enter stop time:
Enter hours, minutes and seconds respectively:8
12
15
TIME DIFFERENCE: 12:34:55 - 8:12:15 = 4:22:40
In this program, user is asked to enter two time periods and these two periods are stored in structure variables start Time and stop Time respectively.
Then, the function
difference Between Time Period calculates the difference between the time periods and the result is displayed in main() function without returning it (Using call by reference technique).
