Why is this program not terminating when the input is x or X?

#1

import java.util.*;

public class Main {

public static void main(String args[]) {

Scanner s = new Scanner(System.in);

	int N1,N2;
	char c;
	int result;
	do {
		c = s.next().charAt(0);
		switch (c) {
		case '+':
			N1 = s.nextInt();
			N2 = s.nextInt();
			result = N1+N2;
			System.out.println(result);
			break;
		case '-':
			N1 = s.nextInt();
			N2 = s.nextInt();
			result = N1-N2;
			System.out.println(result);
			break;
		case '*':
			N1 = s.nextInt();
			N2 = s.nextInt();
			result = N1*N2;
			System.out.println(result);
			break;
		case '/':
			N1 = s.nextInt();
			N2 = s.nextInt();
			result = N1/N2;
			System.out.println(result);
			break;
		case '%':
			N1 = s.nextInt();
			N2 = s.nextInt();
			result = N1%N2;
			System.out.println(result);
			break;
		default:
			System.out.println("Invalid operation. Try again.");}
	}
while (c!='x'||c!='X');
}

}

#2

@abhishek_krishnan,
while (c!=‘x’||c!=‘X’); use && condition here.

Also, intead of default use if-else, because in your code if input is ‘x’ then also you will be printing System.out.println(“Invalid operation. Try again.”);

Corrected code:

#3

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