C Program to Calculate Difference Between Two Time Periods

C program to calculate the difference between two time periods. Create a program to calculate the difference between two time periods stored as structure (hour, min, sec) and give syntax for creating and accessing a structure. The structure is a user-defined data type in C which allows you to combine different data types Suppose you want to store a record of a Time or Period which consists of hours, minutes and seconds.

You can define a structure to hold this information. struct keyword is used to define a structure. struct define a new data type which is a collection of different type of data.

Structure Syntax

struct structure_name
{
//Statements
};

Here struct is the reserved keyword and structure_name is the name of the structure. This name can be changed.

C Program to Calculate Difference Between Two Time Periods

#include <stdio.h>

/*write a 'c' program to find the difference between two dates using structure*/

struct TIME
{
	int seconds;
	int minutes;
	int hours;
};

void Difference(struct TIME t1, struct TIME t2, struct TIME *diff);

int main()
{
	struct TIME t1, t2, diff;

	printf("Enter start time: \n");
	printf("Enter hours, minutes and seconds respectively: ");

	scanf("%d%d%d", &t1.hours, &t1.minutes, &t1.seconds);
	printf("Enter stop time: \n");
	printf("Enter hours, minutes and seconds respectively: ");

	scanf("%d%d%d", &t2.hours, &t2.minutes, &t2.seconds);

	Difference(t1, t2, &diff);

	printf("\nTIME DIFFERENCE: %d:%d:%d - ", t1.hours, t1.minutes, t1.seconds);
	printf("%d:%d:%d ", t2.hours, t2.minutes, t2.seconds);
	printf("= %d:%d:%d\n", diff.hours, diff.minutes, diff.seconds);

	return 0;
}

void Difference(struct TIME t1, struct TIME t2, struct TIME *differ)
{
	if (t2.seconds > t1.seconds)
	{
		--t1.minutes;
		t1.seconds += 60;
	}

	differ->seconds = t1.seconds - t2.seconds;

	if (t2.minutes > t1.minutes)
	{
		--t1.hours;
		t1.minutes += 60;
	}

	differ->minutes = t1.minutes - t2.minutes;
	differ->hours = t1.hours - t2.hours;
}

The Output of Difference Between Two Time Periods

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