Sum of All Odd and Even Numbers in Java

 Machine Problem

Write a program using Java to ask the user to give a number  and then the program will sum all the odd and even numbers of the given number, and display the results on the screen.

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Program Listing

/*  Odd_Even.java
 * 
 *  Prof. Jake Roderiguez Pomperada, MAED-IT, MIT
 *  www.jakerpomperada.com  and www.jakerpomperada.blogspot.com
 *  jakerpomperada@gmail.com
 *  Bacolod City, Negros Occidental Philippines
 * 
 * 
Machine Problem

Write a program using Java to ask the user to give a number 
and then the program will sum all the odd and even numbers of
the given number, and display the results on the screen.
 */



import java.util.Scanner;

  

class Odd_Even

{
   
    
   public static void main(String args[])

   {

        int a=0,num=0;  
        int odd_numbers_sum=0,even_numbers_sum=0;
      
       Scanner input = new Scanner(System.in);

       System.out.println("\n");
       System.out.println("\tSum of All Odd and Even Numbers in Java");
       System.out.println();
      
       System.out.print("\tGive a Number : ");
       
       num=input.nextInt();

    for(a=1; a<=num; a++){  
        if(a%2==0) 
          even_numbers_sum=even_numbers_sum+a;
        else
         odd_numbers_sum=odd_numbers_sum+a;
        }
        
        System.out.println("\n");
        System.out.println("\tSum of all odd numbers are: "+odd_numbers_sum);
        System.out.println("\tSum of all even numbers are: "+even_numbers_sum);
        System.out.println("\n");
       System.out.println("\tEnd of Progam");
       System.out.println();
      
        
   }

   
   

}