1. Below is the c code for a calendar app.i. How many elements used in this program.ii. Explain the elements in this program.#include <stdio.h> #include <stdlib.h> int get_1st_weekday(int year){ int d; d = (((year - 1) * 365) + ((year - 1) / 4) - ((year - 1) / 100) + ((year) / 400) + 1) % 7; return d; } int main() { system("Color 3F"); int year,month,day,daysInMonth,weekDay=0,startingDay; printf("\nEnter your desired year:"); scanf("%d",&year); char *months[]={"January","February","March","April","May","June","July","August","September","October","November","December"}; int monthDay[]={31,28,31,30,31,30,31,31,30,31,30,31}; if((year%4==0&&year%100!=0)||year%400==0) monthDay[1]=29; startingDay=get_1st_weekday(year); for(month=0;month<12;month++){ daysInMonth=monthDay[month]; printf("\n\n---------------%s-------------------\n",months[month]); printf("\n Sun Mon Tue Wed Thurs Fri Sat\n"); for(weekDay=0;weekDay<startingDay;weekDay++) printf(""); for(day=1;day<=daysInMonth;day++){ printf("%5d",day); if(++weekDay>6){ printf("\n"); weekDay=0; } startingDay=weekDay; } } }

the elements in program are: variable keyword identifiers constant character set datatypes with…

Answered: 1. Below is the c code for a calendar…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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1. Below is the c code for a calendar app.

i. How many elements used in this program.

ii. Explain the elements in this program.

#include <stdio.h>
	#include <stdlib.h>

	int get_1st_weekday(int year){

	int d;
	d = (((year - 1) * 365) + ((year - 1) / 4) - ((year - 1) / 100) + ((year) / 400) + 1) % 7;
	return d;
	}

	int main()
	{
	system("Color 3F");
	int year,month,day,daysInMonth,weekDay=0,startingDay;
	printf("\nEnter your desired year:");
	scanf("%d",&year);

	char *months[]={"January","February","March","April","May","June","July","August","September","October","November","December"};
	int monthDay[]={31,28,31,30,31,30,31,31,30,31,30,31};

	if((year%4==0&&year%100!=0)\|\|year%400==0)
	monthDay[1]=29;

	startingDay=get_1st_weekday(year);

	for(month=0;month<12;month++){

	daysInMonth=monthDay[month];
	printf("\n\n---------------%s-------------------\n",months[month]);
	printf("\n Sun Mon Tue Wed Thurs Fri Sat\n");

	for(weekDay=0;weekDay<startingDay;weekDay++)
	printf("");

	for(day=1;day<=daysInMonth;day++){
	printf("%5d",day);

	if(++weekDay>6){
	printf("\n");
	weekDay=0;
	}
	startingDay=weekDay;
	}

	}


	}

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