#include <stdio.h>
#include <stdlib.h>
 
int main(void)
{
    int i = 0, day_of_week = 0, number_of_days = 0;
    printf("Enter the number of days in the month:\n");
    scanf("%d",&number_of_days);
    printf("Enter starting day of the week:\n 1=SUN 2=MON 3=TUE...\n");
    scanf("%d",&day_of_week);
 
 
    for (i = 1; i < day_of_week; i++)
        printf("   ");
 
    for (i = 1; i <= number_of_days; i++)
    {
        printf("%2d ", i);
        if(day_of_week == 7)
        {
           printf("\n");
           day_of_week = 0;
        }
        day_of_week++;
    }
    printf("\n");
    system("pause");
    return 0;
}