Thread: Windows network programming from a console program

Code:

// simp_calendar.cpp : Defines the entry point for the console application.
// Written Visual Studio 2005 C.
// Starting days are ONE day later from the previous year unless a leap year then they are TWO.


#include <stdio.h>
// January 1st, 2023 was a SUNDAY.
// January 1st, 1598 was a SUNDAY.
// 1600 was a leap year.




int global_year_printing=1598;
int global_month_printing=0;
int day_start_count=1; // Starting count day 1-7 of the week start should NEVER be more than 7.


// prints the title days of the week
int print_titles_of_week()	{
	printf("\n\tSun\tMon\tTue\tWed\tThu\tFri\tSat\n");
return 0;
}


// prints the days of each month
int print_days_of_month(int month)	{
	int end_day=0;
	if (month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12) {
		end_day=31;
	}
	if (month==4 || month==6 || month==9 || month==11) {
		end_day=30;
	}
	if (month==2) {
		end_day=28;
	}
	if (month==2 && global_year_printing%4==0) {
		end_day=29;
	}
	for (int x=1; x<=day_start_count-1; x=x+1) {printf("\t"); }
	for (int n=1; n<end_day+1; n=n+1)		{		
		printf("\t%d",n);	
		day_start_count=day_start_count+1;		
		if (day_start_count==8)	{ printf("\n");	day_start_count=1; }
	}
printf("\n");
return 0;
}


int print_month(int monthsyear)		{
	printf("\n\t%d", global_year_printing);
	if (monthsyear==1)	{ printf("\tJANUARY\n");	}	
	if (monthsyear==2)	{ printf("\tFEBRUARY\n");	}
	if (monthsyear==3)	{ printf("\tMARCH\n");		}	
	if (monthsyear==4)	{ printf("\tAPRIL\n");		}
	if (monthsyear==5)	{ printf("\tMAY\n");		}	
	if (monthsyear==6)	{ printf("\tJUNE\n");		}
	if (monthsyear==7)	{ printf("\tJULY\n");		}	
	if (monthsyear==8)	{ printf("\tAUGUST\n");		}
	if (monthsyear==9)	{ printf("\tSEPTEMBER\n");	}	
	if (monthsyear==10) { printf("\tOCTOBER\n");	}
	if (monthsyear==11) { printf("\tNOVEMBER\n");	}	
	if (monthsyear==12) { printf("\tDECEMBER\n");	}
return 0;
}


int get_year ()	{
	printf("Enter the year to print after 1600: ");
	scanf("%d", &global_year_printing);
	if (global_year_printing > 1598) { day_start_count=global_year_printing-1598+1; }
	if (global_year_printing > 1600) { 
		day_start_count=day_start_count+((global_year_printing-1600)/4);
		day_start_count=day_start_count+1; 	
	}
	day_start_count=day_start_count%7;
	if (day_start_count==0)	{day_start_count=1;} 
	return 0;
}


int main()	{
	get_year();
	for (int months_of_year_loop=1; months_of_year_loop<13; months_of_year_loop=months_of_year_loop+1 )		{
		print_month(months_of_year_loop);
		print_titles_of_week();
		print_days_of_month(months_of_year_loop);		
	}
	//printf("\ntest:%d\n", 5/4);
return 0;
}