package java_problems_datastructures;

import java.util.Scanner;

public class EvenTest {
	
	/* use for loop to check if it is even number or not
	   by default set isItEven variable to false
	   start the loop with i value 1
	   it change the value of boolean variable every time it entered the loop.
	   fixes the variable when for loop terminates
	*/
	public static boolean isEven(long value) {
		boolean isItEven = false;
		for (int i = 1; i < value; i++)
			isItEven = !isItEven;

		return isItEven;
	}

	public static void main(String args[]) {

		// take input from the user
		Scanner input = new Scanner(System.in);

		System.out.print("Enter a number:");
		Long userInput = input.nextLong();

		boolean check = isEven(userInput);

		if (check == true) {

			System.out.println(+userInput + " is even number");
		} else {

			System.out.println(+userInput + " is not an even number");
		}
		input.close();
	}
}