void subhundred(int i)
{
	const char *low[19] = { "one", "two", "three", "four", "five", "six",
				"seven", "eight", "nine", "ten", "eleven", "twelve",
				"thirteen", "fourteen", "fifteen", "sixteen",
				"seventeen", "eighteen", "nineteen" };
	const char *tens[8] = { "twenty", "thirty", "fourty", "fifty", "sixty",
				"seventy", "eighty", "ninety" };
	if (i < 20)
		printf("%s ", low[i-1]);
	else {
		printf("%s", tens[(i/10) - 2]);
		if (i%10)
			printf("-%s", low[i%10-1]);
		printf(" ");
	}
}

void partial(int i, int l)
{
	const char *low[9] = { "one", "two", "three", "four", "five", "six",
				"seven", "eight", "nine" };
	const char *place[4] = { "", "thousand", "million", "billion" };
	
	if (i/1000 > 0)
		partial(i/1000,l+1);
	if (i/100 > 0)
		printf("%s hundred ", low[(i%1000)/100 - 1]);
	if (i%100)
		subhundred(i%100);
	printf("%s ", place[l]);
}

void translate(int i)
{
	if (i < 0)
	{
		printf("negative ");
		i=-i;
	}
	if (i)
		partial(i, 0);
	else
		printf("zero");
	printf("\n"); 
}

int main(int argc, char *argv[])
{
	if (argc == 2)
		translate(atoi(argv[1]));
	else
		printf("Usage: %s number\n", argv[0]);
	return 0;
}