import java.applet.*;
import java.awt.*;

public class Add extends Applet
{
	public void init()
	{
		setBackground(Color.yellow);
		setForeground(Color.black);
	}
	public void paint(Graphics g)
	{
		int x=0;
		int y=0;
		int answer=0;
		float divide_answer=0;
		int operation=0;
		String paramText;

		paramText = getParameter("num1");
		x = Integer.parseInt(paramText);
		// this converts our parameter string to an int 

		paramText = getParameter("num2");
		y = Integer.parseInt(paramText);

		paramText = getParameter("operation");
		operation = Integer.parseInt(paramText);

		if (operation == 1)
		{				// use curly brackets
						// to have more than one
						// in your if statement
			answer = x + y;
			g.drawString("Your answer = " + answer, 20, 20);
		}
		else if (operation == 2)
		{	
			answer = x - y;
			g.drawString("Your answer = " + answer, 20,20);
		}
		else if (operation == 3)
		{
			answer = x * y;
			g.drawString("Your answer = " + answer, 20, 20);
		}
		else if (operation == 4)
		{
			divide_answer = x / y;
			g.drawString("Your answer = " + divide_answer, 20, 20);
		}
		else	
			g.drawString("Invalid operation", 20, 20);



	}
}