ReadNumbersByLettersAndAddNumericCommaByUsing Recursion

#include<iostream>

#include<string>

#include<vector>

using namespace std;

string ArrName[] = { " Thousand"," Million"," Bilion" };

string ArrNameDigi[] = { "","One" ,"Two" ,"Three","Four","Five","Six","Seven" ,"Eight","Nine","Ten",

"Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen","Seventeen","Eighteen","Ninteen" };

string ArrNameDigTerms[] = { "","","Twenty" , "Thirty","Forty","Fifty","Sixty","Seventy","Eighty" ,"Ninety" ,"Hundred" };

string ReGetStringOfDigit(string& DigitString)

{

long long N;

N = stoll(DigitString);

DigitString = to_string(N);

return DigitString;

}

void ExchangeNumberToText(string DigitString)

{

ReGetStringOfDigit(DigitString);

if (DigitString.length() == 0)

{

cout << "";

}

else if (DigitString.length() == 1)

{

cout << ArrNameDigi[stoi(DigitString)];

}

else if (DigitString.length() == 2)

{

if (stoi(DigitString) >= 10 && stoi(DigitString) <= 19)

{

cout << ArrNameDigi[stoi(DigitString)];

}

else

{

cout << ArrNameDigTerms[(stoi(DigitString) / 10)];

if ((stoi(DigitString) - ((stoi(DigitString) / 10) * 10)) > 0)

{

cout << "-" << ArrNameDigi[stoi(DigitString) - ((stoi(DigitString) / 10) * 10)];

}

}

}

else if (DigitString.length() == 3)

{

int SN1, SN2;

SN1 = stoi(DigitString) / 100;

SN2 = stoi(DigitString) - SN1 * 100;

ExchangeNumberToText(to_string(SN1));

cout << " Hundred ";

ExchangeNumberToText(to_string(SN2));

}

else if (DigitString.length() > 3)

{

vector<string> VeDig;

short Len = DigitString.length();

while (Len != 0)

{

if (Len >= 3)

{

VeDig.push_back(DigitString.substr(DigitString.length() - 3, DigitString.length()));

DigitString.erase(DigitString.length() - 3, DigitString.length());

Len -= 3;

}

else

{

VeDig.push_back(DigitString);

Len = 0;

}

}

for (int i=VeDig.size()-1;i>=0;i--)

{

cout<<VeDig.at(i);

if (i != 0)

{

cout << ",";

}

}

cout << endl;

for (int i = VeDig.size() - 1; i >= 0; i--)

{

ExchangeNumberToText(VeDig.at(i));

if (i >= 1)

{

cout << ArrName;

if(stoi(VeDig.at(i-1))>0)

cout << " and ";

}

}

}

}

int main()

{

long long num;

char Again = 'y';

while (tolower(Again) == 'y')

{

cout << "Enter the number: ";

cin >> num;

string DigitString = to_string(num);

ExchangeNumberToText(DigitString);

cout << "\n\nAre you want read Another Number just press [y]: ";

cin >> Again;



}

cin.ignore();

cin.get();

return 0;

}