Chapter - 10: Strings

Develop a program that receives the month and year from the keyboard as integers and prints the calendar in the following format.


F
Sections
4
Exercises
September 2004
Mon Tue Wed Thu Fri Sat Sun
1   2   3   4   5   6   7
8   9   10  11  12  13  14
15  16  17  18  19  20  21
22  23  24  25  26  27  28
29  30

Note that according to the Gregorian calendar 01/01/1900 was Monday. With this as the base, the calendar should be generated.


#include<stdio.h>
#include<conio.h>
#include<Windows.h>

#define VS /*Uncomment this if using Visual Studio*/
//#define TC /*Uncomment this if using Turbo C++*/

#define LEAP (!(yr%4))/*Checing for leap year*/

int main()
{
	int j = 1, a = 7, i, x = 1, nod;
	int year, yr, month, m, mon, curr, next = 0;


	/*yr is for traversing the year, andn year is the
	 year given by the user. mon is for traversing the 
	 months and month is the month given by user. curr 
	 contains the starting day of the current 	month 
	 and next conatains the starting day of the next month.*/


	printf("\nEnter the year : ");
	scanf("%d", &year);
	printf("\nEnter the month : ");
	scanf("%d", &month);


#ifdef VS
	system("cls");/*clearing screen in visula studio.*/
#endif
#ifdef TC
	clrscr();
#endif


	for (yr = 1900; yr <= year; yr++)/*Traversing years*/
	{
		if (yr < year)
			m = 12; /*It will traverse the all months if 
			the year is not what user entered*/
		else
			m = month;/*It will traverse till the month user 
			want if the wanted year is encountered.*/
			
		for (mon = 1; mon <= m; mon++)//traversing all months of the year
		{
			if (mon == 2)/*If the feb is encountered*/
			{
				if (LEAP)
					nod = 29;
				else
					nod = 28;
			}
			else if (mon == 4 || mon == 6 || mon == 9 || mon == 11)
			/*Months with 30 days*/
				nod = 30;
			else/*Months with 31 days*/
				nod = 31;
			int i = 1;
			curr = next;/*Current month starts from this day*/
			while (i <= nod)
			/*This will find the day from which next month will start*/
			{
				next++;
				i++;
				if (next == 7)
					next = 0;
			}
		}
	}


	//x is dates

	j = 1, a = 7, i, x = 1;

	if (month == 1)
		printf("\n\t\tJanuary");
	if (month == 2)
		printf("\n\t\tFebraury");
	if (month == 3)
		printf("\n\t\tMarch");
	if (month == 4)
		printf("\n\t\tApril");
	if (month == 5)
		printf("\n\t\tMay");
	if (month == 6)
		printf("\n\t\tJune");
	if (month == 7)
		printf("\n\t\tJuly");
	if (month == 8)
		printf("\n\t\tAugust");
	if (month == 9)
		printf("\n\t\tSeptember");
	if (month == 10)
		printf("\n\t\tOctober");
	if (month == 11)
		printf("\n\t\tNovember");
	if (month == 12)
		printf("\n\t\tDecember");
	printf("\t %d\n\n", year);

	printf("\n\n   Sun   Mon   Tue   Wed   Thu   Fri   Sat\n\n");

	for (i = 1; x <= nod; i++)
	{
		for (j = 1; j <= 7; j++, curr--)
		{
			if (x>9)//maintaining the structure of the calender
				printf("    ");
			else
				printf("     ");

			if (curr>0)//spacing for start the calender from the given day
				printf(" ");
			else//printing of dates begin.
			{
				printf("%d", x);
				if (x <= nod)
					x++;
				if (x>nod)
					break;
			}
		}
		printf("\n\n");//next week

		if (x>nod)
			break;
	}
	_getch();
	return 0;
}

© 2020 Garbage Valuegarbage value logo