//
// HelloFunctions.java
//


public class HelloFunctions
{
    public static void hello()
    {
        System.out.println("Hello, world!");
    }

    public static void hello(String name)
    {
        System.out.println("Hello, " + name + "!");
    }

    public static int triple(int n)
    {
        return 3*n;
    }

    public static void main(String[] args)
    {
        hello(); // call the function hello()
        hello();

        hello("Nina");

        for (int i=0; i<5; i++)
            System.out.println(i + " " + triple(i));

    }
}