C++ Question: Given Tester file: // Chapter 12-- Assignment 14: Check Writer //

Question

C++ Question:

Given Tester file:

// Chapter 12-- Assignment 14: Check Writer
// This program can convert a dollar and cents amount given in
// numerical form to a word description of the amount.
#include <iostream>
#include <iomanip>
#include <string>
#include <string.h>
using namespace std;

#include "TextVersionOfNumber.h"
// Assume a maximum amount of $10,000

int main()
{
   string date = "03/05/2016", payee = "Maya Tolappa";
   TextVersionOfNumber checkAmount;
   double testAmounts[] = { 0, .01, .25, 12, 12.45, 19, 19.02,
       19.45, 20, 20.45,
       34, 56.78, 100, 109, 119.78,
       450, 678.90, 1000, 1009.45, 1056,
       1234, 1567.98, 9999, 9999.99 };

   for (int i = 0; i < sizeof(testAmounts) / sizeof(double); i++)
   {
       double an_amount = testAmounts[i];
       checkAmount.setAmount(an_amount);
       cout << setprecision(2) << fixed;
       cout << setw(60) << right;
       cout << "Date: " << date << endl;
       cout << "Pay to the order of: " << payee << " ";
       cout << "$" << an_amount << endl;
       cout << checkAmount.getTextVersionOfNumber() << endl;
       cout << "--------------------------------------------------------------------- ";
   }
   cin.get();
   return 0;
}

Given h file:

#include<iostream>
#include<string>
#include <iomanip>
using namespace std;
class TextVersionOfNumber
{
private:
   double amount;

public:
   string getTextVersionOfNumber();
   void setAmount(double);
};

I need to return the numbers as a string using array processing with decision structures.

This is what I have so far...

#include "TextVersionOfNumber.h"
string TextVersionOfNumber::getTextVersionOfNumber()
{
  
   string one_19[] = { "", "one", "two", "three", "four",
       "five", "six", "seven", "eight", "nine", "ten",
       "eleven", "twelve",
       "thirteen", "fourteen", "fifteen", "sixteen", "seventeen",
       "eighteen", "nineteen" };

   string twenty_90[] = { "", "", "twenty", "thirty", "forty",
       "fifty", "sixty", "seventy", "eighty", "ninety" };

}
void TextVersionOfNumber::setAmount(double _amount)
{
   amount = _amount;

}

Is anyone able to finish this so that it works? I know that the tester and h file are correct, but i need help with the last file that I started. Thanks!

Explanation / Answer

void convert_to_words(char *num)
{
int len = strlen(num);

if (len == 0) {
fprintf(stderr, "empty string ");
return;
}
if (len > 4) {
fprintf(stderr, "Length more than 4 is not supported ");
return;
}

char *single_digits[] = { "zero", "one", "two", "three", "four",
"five", "six", "seven", "eight", "nine"};

char *two_digits[] = {"", "ten", "eleven", "twelve", "thirteen", "fourteen",
"fifteen", "sixteen", "seventeen", "eighteen", "nineteen"};

char *tens_multiple[] = {"", "", "twenty", "thirty", "forty", "fifty",
"sixty", "seventy", "eighty", "ninety"};

char *tens_power[] = {"hundred", "thousand"};

printf(" %s: ", num);

if (len == 1) {
printf("%s ", single_digits[*num - '0']);
return;
}

while (*num != '') {

if (len >= 3) {
if (*num -'0' != 0) {
printf("%s ", single_digits[*num - '0']);
printf("%s ", tens_power[len-3]); // here len can be 3 or 4
}
--len;
}

else {
if (*num == '1') {
int sum = *num - '0' + *(num + 1)- '0';
printf("%s ", two_digits[sum]);
return;
}

else if (*num == '2' && *(num + 1) == '0') {
printf("twenty ");
return;
}

else {
int i = *num - '0';
printf("%s ", i? tens_multiple[i]: "");
++num;
if (*num != '0')
printf("%s ", single_digits[*num - '0']);
}
}
++num;
}
}

call the function as convert_to_words("9923"); in the main function.

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