/* month_name:  return name of n-th month */
char *month_name(int n)
{
	static char *name[] = {
		"Illegal month",
		"January", "February", "March",
		"April", "May", "June",
		"July", "August", "September",
		"October", "November", "December"
	};

	return (n < 1 || n > 12) ? name[0] : name[n];
}