#!/usr/bin/env php

<?php

if(! isset($argv[1]) || ! is_numeric($argv[1]) || intval($argv[1]) <= 0){
	printf("Usage: %s nbr_int
    nbr_int: Un nombre entier supérieur à 0\n", $argv[0]);
	exit(1);
}

$nbr_int = intval($argv[1]);

$a = 0;
$b = 1;

while ($b < $nbr_int) {
	printf("%d\n", $b);
	$b = $a + $b;
	$a = $b - $a;
}

printf("b/a = %1.15f\n", $b/$a);

exit(0);