#!/usr/local/bin/perl
use strict;
use Curses;
&initialize();
&routine();
&finalize();

sub routine {
while(1){
    while ((my $key = getch()) ne ERR) {    
	if($key eq 'q'){
	    &clear_screen;
	    done("See you again!");
	}
	if($key eq 'h'){
	    &clear_screen;
	    print_me("Hello");
	}
	if($key eq 'w'){
	    &clear_screen;
	    print_me("World");
	}
    }
}

}
sub initialize{
    Curses::initscr();
    Curses::noecho();           
    Curses::cbreak(); 
    Curses::nodelay(1);         
}
sub finalize{
    Curses::endwin();
    exit(0);
}
sub print_me
{
    my $string = shift;
    Curses::move(10,20);
    Curses::addstr($string);
    Curses::move(0,0);
}
sub clear_screen
{
    Curses::move(10,20);
    Curses::addstr(" "x70);     
}
sub done { 
    endwin(); 
    print "@_\n"; 
    exit; 
}