Question

# JAVA 

In the following program, declare an integer array daysInMonth that stores the number of days in January, February, March, April, and so on. Fill it with the appropriate values (31, 28, 31, 30, ...).

The program reads a month and year from the user.

When the year is a leap year, change the entry for February to 29.

Print out how many days the given month has.

CODE:

import java.util.Scanner;

public class NumberOfDays
{
   public static void main(String[] args)
   {
      // Declare and initialize daysOfMonth
      . . . daysOfMonth = . . .

      Scanner in = new Scanner(System.in);
      System.out.print("Month (1 - 12): ");
      int month = in.nextInt();
      System.out.print("Year: ");
      int year = in.nextInt();
    
      if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
         // It's a leap year. Adjust the entry for February
         . . .
      }

      // Get the number of days in the given month
      int days = daysOfMonth[. . .];

      System.out.println("Number of days: " + days);             
   }
}

Answer 1

Program:

package sample;

import java.util.Scanner;

public class NumberOfDays

{

public static void main(String[] args)

{

// Declare and initialize daysOfMonth

int daysOfMonth[] = {31,28,31,30,31,30,31,31,30,31,30,31};

Scanner in = new Scanner(System.in);

System.out.print("Month (1 - 12): ");

int month = in.nextInt();

System.out.print("Year: ");

int year = in.nextInt();

  

if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {

// It's a leap year. Adjust the entry for February

daysOfMonth[1]=29;//Here array index starts from 0 thats why seting 1st index to 29

}

// Get the number of days in the given month

int days = daysOfMonth[month-1];//same hoolds here

System.out.println("Number of days: " + days);

}

}

Output: