Example: Basic Time Difference Calculator in C

// Basic Time Difference Calculator
#include <stdio.h>

int main() {
    // Step 1: Declare variables for input and result
    int startHour, startMinute;
    int endHour, endMinute;
    int diffHour, diffMinute;

    // Step 2: Get the start time from the user
    printf("Enter start time (hours minutes): ");
    scanf("%d %d", &startHour, &startMinute);

    // Step 3: Get the end time from the user
    printf("Enter end time (hours minutes): ");
    scanf("%d %d", &endHour, &endMinute);

    // Step 4: Calculate difference in minutes first
    int totalStartMinutes = startHour * 60 + startMinute;
    int totalEndMinutes = endHour * 60 + endMinute;

    // Step 5: Calculate total difference in minutes
    int totalDiffMinutes = totalEndMinutes - totalStartMinutes;

    // Step 6: Convert total difference minutes back to hours and minutes
    diffHour = totalDiffMinutes / 60;
    diffMinute = totalDiffMinutes % 60;

    // Step 7: Print the result
    printf("Time difference: %d hours %d minutes\n", diffHour, diffMinute);

    return 0;
}