#include<stdio.h>
// Author- Khadiza Sultana
// Date- 10/8/2024
// Prints the Calendar of a month 
int main()
{
    int n, i, day; // n stores the number of days in the month, i used as a loop counter, day stores the starting day of the week(from 1 to 7, where 1= Sunday, 7= saturday)
    printf("Enter number of days in month:");
    scanf("%d", &n);
    printf("Enter starting day of the week (1=Sun, 7=Sat): ");
    scanf("%d", &day);
    for(i = 1; i < day; ++i) // This loop is responsible for printing spaces before the first day of the month.
    // If day == 1, no spaces are printed before thr month starts on sunday.
    // If day == 4, the loop runs three times and prints three spaces to align the first day under Wednesday
    {
        printf("   "); // three spacesto allign the days even when there's two digit days the days will be aligned 
    }
    for(i = 1; i <= n; i++, day++) // Prints the actual days of the month.
    // the day++ inside the for loop increments the day variable with each iteration, so the program knows when to start a new line after printing Saturday
    {
        printf("%2d ", i);
        if(day == 7)
        {
            day = 0;
            printf("\n");
        }
    }

    return 0;
}