Reverse.java

import java.util.Scanner;

public class Reverse {
    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        int ans = 0;
        System.out.println("Choice Operator: ");

        while (true) {
            char op = in.next().trim().charAt(0);
            System.out.print("Enter Two number: ");
            if (op == '+' || op == '-' || op == '*' || op == '/' || op == '%') {
                int num1 = in.nextInt();
                int num2 = in.nextInt();
                if (op == '+') {
                    ans = num1 + num2;
                }
                if (op == '-') {
                    ans = num1 - num2;
                }
                if (op == '*') {
                    ans = num1 * num2;
                }
                if (op == '/') {
                    ans = num1 / num2;
                }
                if (op == '%') {
                    ans = num1 % num2;
                }

            }
            System.out.println(ans);

        }
    }

}