Computer Science The program below uses a class, DomainAvailabilityTools, which includes a table of registered domain names. The main function prompts for domain names until the user presses Enter at the prompt. The domain name is checked against a list of the registered domains in the DomainAvailabilityTools class. If the domain name is not available, the program displays similar domain names.   #include #include #include #include "DomainAvailabilityTools.h" using namespace std; // *********************************************************************** // prompts user string. Returns string. string GetString(string prompt) { string userInput;    cout << prompt << endl; cin >> userInput; return userInput; } // *********************************************************************** int main() { const string PROMPT_DOMAIN_NAME = "\nEnter a domain name to check availability (Enter to exit): "; DomainAvailabilityTools dvTools; string inputName; string similarDomainNames; // Alternatives to a registered domain name bool isDomainNameValid; bool isDomainNameAvailable; // Get the first domain name to process inputName = GetString(PROMPT_DOMAIN_NAME); while(inputName.size() > 0) { isDomainNameValid = (dvTools.CheckIfDomainNameIsValid(inputName) == 0); // Display the results cout << "\"" << inputName << "\" "; if (isDomainNameValid) { cout << "is "; // If the domain name is available, say so. If not, say so but // include similar domain names, if any. isDomainNameAvailable = dvTools.HasAvailableDomainName(inputName); if (isDomainNameAvailable) { cout << "available." << endl; } else { cout << "not available." << endl; similarDomainNames = dvTools.GetSimilarDomainNames(inputName); if (similarDomainNames.size() > 0) { cout << "The following similar names are available: " << endl; cout << similarDomainNames << endl; } else { cout << "No available similar domain names were found." << endl; } } } else { cout << "is not a valid domain name." << endl; } // Get the next domain to process inputName = GetString(PROMPT_DOMAIN_NAME); } return 0; }

The program below uses a class, DomainAvailabilityTools, which includes a table of registered domain names. The main function prompts for domain names until the user presses Enter at the prompt. The domain name is checked against a list of the registered domains in the DomainAvailabilityTools class. If the domain name is not available, the program displays similar domain names.

#include <iostream>
#include <string>
#include <cctype>
#include "DomainAvailabilityTools.h"
using namespace std;

// ***********************************************************************

// prompts user string. Returns string.
string GetString(string prompt) {
string userInput;
  
cout << prompt << endl;
cin >> userInput;

return userInput;
}
// ***********************************************************************

int main() {
const string PROMPT_DOMAIN_NAME =
"\nEnter a domain name to check availability (Enter to exit): ";
DomainAvailabilityTools dvTools;

string inputName;
string similarDomainNames; // Alternatives to a registered domain name
bool isDomainNameValid;
bool isDomainNameAvailable;

// Get the first domain name to process
inputName = GetString(PROMPT_DOMAIN_NAME);

while(inputName.size() > 0) {

isDomainNameValid = (dvTools.CheckIfDomainNameIsValid(inputName) == 0);

// Display the results
cout << "\"" << inputName << "\" ";
if (isDomainNameValid) {
cout << "is ";
// If the domain name is available, say so. If not, say so but
// include similar domain names, if any.
isDomainNameAvailable = dvTools.HasAvailableDomainName(inputName);
if (isDomainNameAvailable) {
cout << "available." << endl;
}
else {
cout << "not available." << endl;
similarDomainNames = dvTools.GetSimilarDomainNames(inputName);
if (similarDomainNames.size() > 0) {
cout << "The following similar names are available: " << endl;
cout << similarDomainNames << endl;
}
else {
cout << "No available similar domain names were found." << endl;
}
}
}
else {
cout << "is not a valid domain name." << endl;
}

// Get the next domain to process
inputName = GetString(PROMPT_DOMAIN_NAME);
}

return 0;
}