/*  Created 2/2/98
    Solution to Assignment #4

    Duy Nguyen
 */

#include <iostream.h>

const int MAX = 20;

/*  Define strings */

char ones[10][MAX] = {"zero", "one", "two", "three", "four","five","six",
			"seven","eight","nine"};

char tens[10][MAX] = {"ten","eleven","twelve","thirteen","fourteen","fifteen",
			"sixteen","seventeen", "eighteen","nineteen"};

char tees[9][MAX] = {"ten","twenty","thirty","forty","fifty","sixty",
			"seventy","eighty","ninety"};

char dreds[MAX] = "hundred";

void printdigit(int num);
void print1x(int num);
void printtens(int num);
void printhundreds(int num);


/*  Print for 0 <= num <=9  */
void printdigit(int num)
{

	cout << ones[num];

}

/*  Print for 10 <= num <= 19  */
void print1x(int num)
{
int one_digit = 0;

	one_digit = num%10;

	cout << tens[one_digit];

}

/*  Print for num an exact multiple of 10  */
void printx0(int num)
{
int ten_digit = 0;

	ten_digit = num/10;

	cout << tees[ten_digit];

}

/*  Print for 0 <= num <= 99  */
void printtens(int num)
{
int ten_digit = 0;
int one_digit = 0;

	ten_digit = num/10;
	one_digit = num%10;

	if (ten_digit == 0)
	   printdigit(num);
	else if (ten_digit == 1)
	   print1x(num);
	else
	   cout << tees[ten_digit-1] << "-" << ones[one_digit];

}

/*  Print for 0 <= num <= 999  */
void printhundreds(int num)
{
int hun_digit = 0;
int tens_digit = 0;

	hun_digit = num/100;
	tens_digit = num%100;

	if (hun_digit == 0)
	   printtens(num);
	else
	{
	   cout << ones[hun_digit] << " hundred ";
	   printtens(tens_digit);
	}

}


/*  Test driver for the functions developed above  */

main()
{
int num, i;

	for (i = 0;i < 10;i++)
	{
	cout << "Enter a number:  ";
	cin >> num;
	cout << "\n";

	if (num <= 10) printdigit(num);
	else if ((num>=10) && (num <= 19)) print1x(num);
	else if ((num >= 10) && (num <= 99)) printtens(num);
	else if (num >= 100) printhundreds(num);
	cout << "\n\n";

	}
}