/*
 * File: ExerciseMethod3.java
 *******************************
 * Run with MyCalculator.java
 */

import acm.io.*;
import java.awt.*;
import javax.swing.*;

public class ExerciseMethod3
{   
   public void doCalculation( IOConsole c )
   {
      double num1, num2, sum, diff;
     
      num1 = c.readDouble("Enter num1: ");
      num2 = c.readDouble("Enter num2: ");
      
      sum = addTwoNum( num1, num2 );
      diff = subTwoNum( num1, num2 );
      
      c.println("The sum of two numbers is " + sum + ".");
      c.println("The difference of two numbers is " + diff + ".");
   }

   // This method returns the sum of two numbers
   public double addTwoNum( double a, double b )
   {
      double sum = a + b;      
      return sum;
   }

   // This method returns the difference of two numbers
   public double subTwoNum( double a, double b )
   {
      double diff = a - b;      
      return diff;
   }  
}