[Feng]

b — run instead of main I don't know what you're talking about. Do you have an example of this?

an examples (with the use of an external library though)

Code:

import acm.program.*;
public class AverageTwoDoubles extends ConsoleProgram {
	public void run() {
		println("This program averages two numbers.");
		double n1 = readDouble("Enter no1: ");
		double n2 = readDouble("Enter no2: ");
		double average = (n1 + n2) / 2;
		println("The average is " + average + ".");
	}
}