//This is code for lab9, CISC1600, Spring 2013
//An unfinished code that implements printing a
// number in English: 32 will print as thirty two
// Please carry out the lab based upon the order specified in
// requirement
#include <iostream>
#include <assert.h>
using namespace std;


//precondition: num is between 0 and 9
//postcondition: the english name of num is displayed in terminal
void PrintOnes (int num);

//precondition: num is between 11 and 19
//postcondition: the english name of num is displayed in terminal
void PrintTeen (int num);

//precondition: num is 10, 20, ..., and 90
//postcondition: the english name of num is displayed in terminal
void PrintTens (int num);

void PrintNumber (int);

int main()
{
	int number = 0;
	cout << "Enter a number ";
	cin >> number;
	PrintNumber(number);
    
}

// precondition: num has a value between 0 and 999
// postcondition: the English name of the num is displayed in terminal (standard output)
void PrintNumber (int num)
{
	cout <<"PrintNumber " << num << "\n \n";
    
	assert (num<=999);

	// divide the numbers by relevant digits to get the relevant answers
	int hundred = num /100 ;
	int tens = (num % 100);
	int ones = (num % 10 );
    
	//putting up a condition to only display hundred if it is completly divisible by 100
	if (hundred > 0)
	{
		PrintOnes(hundred);
		cout << " Hundred ";
	}
        
        
	// printing out the teens in the similar manner
	if ((tens > 10)&& (tens < 20))
	{
		PrintTeen(tens);
		//setting tens to zero because there is no need for it anymore
		tens = tens - tens; 
		ones = ones - ones;
       
	}
        
	//if it not teens than start displaying tens by minusing the ones
	tens = tens - ones ;
      
	

	if ((tens == 10)|| (tens > 19))
		PrintTens (tens);
      
	if (ones > 0)
	{
		PrintOnes (ones);
	}
        
	cout <<endl;
}


void PrintOnes (int num)
//precondition: num is between 0 and 9
//postcondition: the english name of num is displayed in terminal
{
 	string Names[10]={"Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"};

	cout << Names[num];
    
}

void PrintTeen (int num)
//precondition: num is between 11 and 19
//postcondition: the english name of num is displayed in terminal
{
	if (num == 11)
		cout << "Eleven ";
	if (num == 12)
		cout << "Twelve ";
	if (num == 13)
		cout << "Thirteen ";
	if (num == 14)
		cout << "Fourteen ";
	if (num == 15)
		cout << "Fifteen ";
	if (num ==16)
		cout << "Sixteen ";
	if (num ==17)
		cout << "Seventeen ";
	if(num == 18)
		cout << "Eighteen ";
	if (num ==19)
		cout << "Nineteen ";
}

void PrintTens (int num)
//precondition: num is 10, 20, ..., and 90
//postcondition: the english name of num is displayed in terminal
{
	if (num == 10)
		cout << "Ten ";
	if (num == 20)
		cout << "Twenty ";
	if (num == 30)
		cout << "Thirty ";
	if (num == 40)
		cout << "Fourty ";
	if ( num == 50)
		cout << "Fifty ";
	if ( num == 60)
		cout << "Sixty ";
	if (num == 70)
		cout << "Seventy ";
	if (num == 80)
		cout << "Eighty ";
	if (num == 90)
		cout << "Ninety ";
    
}