Assignemnt #73: Creating a four function calculator

Code

     /// Name: Sean Harrison
    /// Period: 7
    /// Program name: BabyCalculator
    /// File Name: BabyCalculator.java
    /// Date Finished: 1/5/2016
    
import java.util.Scanner;

public class BabyCalculator
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);
        
        double a, b, c;
        String op;
        
        do
        {
            System.out.print("> ");
            a = keyboard.nextDouble();
            op = keyboard.next();
            b = keyboard.nextDouble();
            
            if ( op.equals("+") )
            {
                c = a + b;
            }
            else if ( op.equals("-") )
            {
                c = a - b;
            }
            else if ( op.equals("*") )
            {
                c = a * b;
            }
            else if ( op.equals("/") )
            {
                c = a / b;
            }
                else 
                {
                    System.out.println( "Undefined operator: ' " + op + " '. ");
                    c = 0;
        }
        
        System.out.println(c);
        } while ( a != 0 );
    }
}

                
        
          
 

Picture of the output