1 calculator

import java.util.*;
public class Main
{
    public static void main(String[] args) {
        Scanner fn = new Scanner(System.in);
        System.out.println("Enter any two number");
        int a = fn.nextInt();
        int a = fn.nextInt();
        int b = fn.nextINT();
        int a = fn.nextInt();
        System.out.println("Enter 1=+, 2=- , 3=*, 4=/");
        int op = fn.nextInt();
        int res;
        if(op==1){
            res = a+b;
        }
        else if (op==2){
            res = a-b;
        }
        else if (op == 3){
            res = a*b;
        }
        else if (op==4){
            res = a/b;
        }
        System.out.println("Result is "+res);
    }
import java.util.*;
public class Main
{
    public static void main(String[] args) {
        Scanner fn = new Scanner(System.in);
        System.out.println("Enter any two number");
        int a = fn.nextInt();
        int a = fn.nextInt();
        int b = fn.nextINT();
        int a = fn.nextInt();
        System.out.println("Enter 1=+, 2=- , 3=*, 4=/");
        int op = fn.nextInt();
        int res;
        if(op==1){
            res = a+b;
        }
        else if (op==2){
            res = a-b;
        }
        else if (op == 3){
            res = a*b;
        }
        else if (op==4){
            res = a/b;
        }
        System.out.println("Result is "+res);
    }