#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define BUFF_SIZE 1024

char *toString(int num);
char *makeString(char *buffer);

int main(int argc, char **argv){

	enum { file, arguments } mode;  //describes input type
	FILE *infile;	
	int i = -1;						//counts argument position
	char read_buffer[BUFF_SIZE], *string, *curr_pos, *decimal_ptr;
	int dollars, cents;	
	
	printf("Enter a string begining with $ to convert: ");
	while(fgets(read_buffer, BUFF_SIZE, stdin)){
		string = read_buffer;
		
		curr_pos = string;
		if(*curr_pos != '$'){
			printf("Done converting, exitingn");
			exit(1);
		}
		
		/* separate decimal from whole number amount */
		while(*curr_pos && (*curr_pos != '.')) curr_pos++;
		*curr_pos = '';
		decimal_ptr = ++curr_pos;
		curr_pos = string + 1;
		
		/* get integer values of dollars/cents */
		dollars = atoi(curr_pos);
		cents = atoi(decimal_ptr);
		char *d = (dollars == 1) ? "dollar" : "dollars";
		char *c = (cents == 1) ? "cent" : "cents";
		
		printf("%s %s and %s %sn", toString(dollars), d, toString(cents), c);
		printf("Enter a string begining with $ to convert: ");
	}
}

char *toString(int num){

	char *ones[] = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };
	char *teens[] = {"ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
	char *tens[] = {"twenty", "thirty", "fourty", "fifty", "sixty", "seventy", "eighty", "ninety" };
	char buffer[1024], *buff_ptr = buffer, *ret;
	buffer[0] = '';
	
	if(num == 0) return makeString(ones[0]);
			
	int index = num/100;
	if(index){
		strcpy(buff_ptr, ones[index]);
		buff_ptr += strlen(ones[index]);
		*buff_ptr++ = ' ';
		strcpy(buff_ptr, "hundred");
		buff_ptr += strlen("hundred");
		*buff_ptr = '';
	}
	num %= 100;
	
	index = num/10;
	if(index){
		if(buffer[0])
			*buff_ptr++ = ' ';
		
		if(index == 1){
			strcpy(buff_ptr, teens[num-10]);
			return makeString(buffer);
		}
		
		strcpy(buff_ptr, tens[index-2]);
		buff_ptr += strlen(tens[index-2]);
		*buff_ptr = '';
	}
	num %= 10;
	
	if(num){
		if(buffer[0])
			*buff_ptr++ = ' ';
		strcpy(buff_ptr, ones[num]);
	}
	
	return makeString(buffer);
}

char *makeString(char *buffer){
	char *ret;
	size_t len = strlen(buffer);
	if(len > 1024) return NULL;
	
	ret = malloc(sizeof(char) * len);
	strcpy(ret, buffer);
}

$ time ruby challenge_1.rb $56.08
"fifty six dollars and eight cents"

real	0m0.008s
user	0m0.004s
sys	0m0.003s

#!/usr/bin/ruby

d1 = ARGV.shift

ones = { 0 => "", 1 => "one", 2 => "two", 3 => "three", 4 => "four", 
         5 => "five", 6 => "six", 7 => "seven", 8 => "eight", 9 => "nine",
         10 => "ten", 11 => "eleven", 12 => "twelve", 13 => "thirteen", 14 => "fourteen",
         15 => "fifteen", 16 => "sixteen", 17 => "seventeen", 18 => "eighteen", 19 => "nineteen" }

tens = { 0 => "", 1 => "ten", 2 => "twenty", 3 => "thirty", 4 => "fourty", 
         5 => "fifty", 6 => "sixty", 7 => "seventy", 8 => "eighty", 9 => "ninety" }

d1 = d1.split('').map {|x| x.to_i}
d1.shift
d1[-3] = '.'
f = String.new
f = "#{ones[d1.shift]} hundred and " if d1.join.to_f > 100
if d1.join.to_f > 20.00
  f.concat "#{tens[d1.shift]} #{ones[d1.shift]} dollars "
else
  f.concat "#{ones[d1.shift]} #{ones[d1.shift]} dollars "
end
d1.shift
if d1.join.to_i < 20
  f.concat "and #{ones[d1.join.to_i]} cents"
else
  f.concat "and #{tens[d1.shift]} #{ones[d1.shift]} cents"
end

p f

#include<iostream>
using namespace std;

//Printing Function
void print(int a)
{

int temp;
temp=a;
int i=0;
int tens=0;
int temp2;


temp2=temp;
i=temp2/100;
if(i==1) cout<<"One";
else if(i==2) cout<<"Two";
else if(i==3) cout<<"Three";
else if(i==4) cout<<"Four";
else if(i==5) cout<<"Five";
else if(i==6) cout<<"Six";
else if(i==7) cout<<"Seven";
else if(i==8) cout<<"Eight";
else if(i==9) cout<<"Nine";
if(i>0 && i<10)
cout<<" Hundred ";


temp2=temp;
i=temp2%100;
i=i/10;
if(i>0)
{
	if(i==2) cout<<"Twenty";
	else if(i==3) cout<<"Thirty";
	else if(i==4) cout<<"Fourty";
	else if(i==5) cout<<"Fifty";
	else if(i==6) cout<<"Sixty";
	else if(i==7) cout<<"Seventy";
	else if(i==8) cout<<"Eightty";
	else if(i==9) cout<<"Ninety";
	tens=i;
	cout<<" ";
}

temp2=temp;
i=temp2%10;

if(tens==1)
{
if(i==1) cout<<"Eleven";
	else if(i==2) cout<<"Twelve";
	else if(i==3) cout<<"Thirteen";
	else if(i==4) cout<<"Fourteen";
	else if(i==5) cout<<"Fifteen";
	else if(i==6) cout<<"Sixteen";
	else if(i==7) cout<<"Seventeen";
	else if(i==8) cout<<"Eighteen";
	else if(i==9) cout<<"Nineteen";
}

else if(i>0)
{
	if(i==1) cout<<"One";
	else if(i==2) cout<<"Two";
	else if(i==3) cout<<"Three";
	else if(i==4) cout<<"Four";
	else if(i==5) cout<<"Five";
	else if(i==6) cout<<"Six";
	else if(i==7) cout<<"Seven";
	else if(i==8) cout<<"Eight";
	else if(i==9) cout<<"Nine";
}

cout<<endl;
}
//end of Function


//Main
int main()
{
int amount=0;
char dollar;

cout<<"Menu"<<endl;


	cout<<"Please Enter the amount with the dollar sign first"<<endl;
	cin>>dollar>>amount;

	while(amount<0 || amount>1000)
	{
	cout<<"Please Enter the amount with the dollar sign first"<<endl;
	cin>>dollar>>amount;
	}


print(amount);



int b;
cout<<"Enter anything to Exit"<<endl;
cin>>b;
return 0;
}