/*
 * boolean_gates.java
 *
 * Created on 23 Οκτώβριος 2012, 8:38 πμ
 *
 * The purpose of this program is to similate the function of an XOR gate
 * using the decision making construct if .. else and simple integer inputs
 * of 0 and 1.
 *
 */
 ;

/**
 *
 * @author  Harris
 */

import java.io.*;
public class boolean_gates {
    
    String data;
    int a, b, xor;
    
    /** Creates a new instance of boolean_gates */
    public boolean_gates() throws IOException {
        
        input();
        xor_process();
        formated_table();
    }
    
    public void input()throws IOException {
        InputStreamReader inStream=new InputStreamReader(System.in);
        BufferedReader stdin=new BufferedReader(inStream);
        
        //boolean wrong;
        //do{
        //try{
        //wrong = false;
        System.out.print("Input A: ");
        data = stdin.readLine();
        a    = Integer.parseInt(data);
        
        System.out.print("Input B: ");
        data = stdin.readLine();
        b    = Integer.parseInt(data);   
        //}
        //catch (Exception e)
        //{System.out.println("wrong data type " + e.toString());
        // wrong = true;
        //}
        //} while (wrong==true);
    }
    
    public void xor_process(){
        
        if (((a==0) && (b==1)) || ((a==1) && (b==0)))
            
            xor = 1;
        else
            xor = 0;  
    }
    
    public void formated_table(){
        
        System.out.println ("A xor B = " + xor);
    }
    
    public static void main(String[] args) throws IOException {
        
        new boolean_gates();
    }
    
}