Question

JAVA PROGRAMMING

source code using appropriate programming style (e.g., descriptive variable names, indenting, comments, etc.).

1. Using the remainder (%) operator, write a program that inputs an integer and displays if the number is even or odd.

B. Write the same program using some other technique without using the remainder (%) operator.

Answer 1

Java Program:

(1)

import java.util.*;

class EvenOrOdd_1
{
   public static void main(String[] args)
   {
       int n;
      
       //Scanner class object
       Scanner reader = new Scanner(System.in);
      
       //Reading n value from user
       System.out.print("Enter n: ");
       n = reader.nextInt();
      
       //Checking for even or odd using % operator
       if(n%2 == 0)
       {
           System.out.printf(" %d is even ", n);
       }
       else
       {
           System.out.printf(" %d is odd ", n);
       }
   }
}

Sample Run:

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(B)

import java.util.*;

class EvenOrOdd_2
{
   public static void main(String[] args)
   {
       int n;
      
       //Scanner class object
       Scanner reader = new Scanner(System.in);
      
       //Reading n value from user
       System.out.print("Enter n: ");
       n = reader.nextInt();
      
       //Checking for even or odd using / and * operator
       if( (n/2)*2 == n)
       {
           System.out.printf(" %d is even ", n);
       }
       else
       {
           System.out.printf(" %d is odd ", n);
       }
   }
}

Sample Run: