Currency Converter Gaming Project in C++

#include <iostream>
#include <iomanip>
#include <map>
#include <string>

using namespace std;

class CurrencyConverter {
public:
    CurrencyConverter();
    void convertCurrency();

private:
    map<string, double> exchangeRates;

    void displayCurrencies();
    double getExchangeRate(const string& fromCurrency, const string& toCurrency);
};

CurrencyConverter::CurrencyConverter() {
    // Initialize exchange rates (example rates)
    exchangeRates["USD"] = 1.0;      // Base currency
    exchangeRates["EUR"] = 0.85;     // 1 USD = 0.85 EUR
    exchangeRates["GBP"] = 0.75;     // 1 USD = 0.75 GBP
    exchangeRates["INR"] = 74.00;    // 1 USD = 74.00 INR
    exchangeRates["JPY"] = 110.00;   // 1 USD = 110.00 JPY
}

void CurrencyConverter::displayCurrencies() {
    cout << "Available Currencies:" << endl;
    for (const auto& pair : exchangeRates) {
        cout << pair.first << endl;
    }
}

double CurrencyConverter::getExchangeRate(const string& fromCurrency, const string& toCurrency) {
    return exchangeRates[toCurrency] / exchangeRates[fromCurrency];
}

void CurrencyConverter::convertCurrency() {
    string fromCurrency, toCurrency;
    double amount;

    cout << "Welcome to the Currency Converter!" << endl;
    displayCurrencies();

    cout << "Enter the currency you want to convert from (e.g., USD): ";
    cin >> fromCurrency;

    cout << "Enter the currency you want to convert to (e.g., EUR): ";
    cin >> toCurrency;

    cout << "Enter the amount in " << fromCurrency << ": ";
    cin >> amount;

    if (exchangeRates.find(fromCurrency) != exchangeRates.end() &&
        exchangeRates.find(toCurrency) != exchangeRates.end()) {
        double rate = getExchangeRate(fromCurrency, toCurrency);
        double convertedAmount = amount * rate;

        cout << fixed << setprecision(2);
        cout << amount << " " << fromCurrency << " is equal to " 
             << convertedAmount << " " << toCurrency << endl;
    } else {
        cout << "Invalid currency entered. Please try again." << endl;
    }
}

int main() {
    CurrencyConverter converter;
    char choice;

    do {
        converter.convertCurrency();
        cout << "Do you want to perform another conversion? (y/n): ";
        cin >> choice;
    } while (choice == 'y' || choice == 'Y');

    cout << "Thank you for using the Currency Converter!" << endl;
    return 0;
}

#include <iostream>

#include <iomanip>

#include <map>

#include <string>

using namespace std;

class CurrencyConverter {

public:

CurrencyConverter();

void convertCurrency();

private:

map<string, double> exchangeRates;

void displayCurrencies();

double getExchangeRate(const string& fromCurrency, const string& toCurrency);

};

CurrencyConverter::CurrencyConverter() {

// Initialize exchange rates (example rates)

exchangeRates["USD"] = 1.0; // Base currency

exchangeRates["EUR"] = 0.85; // 1 USD = 0.85 EUR

exchangeRates["GBP"] = 0.75; // 1 USD = 0.75 GBP

exchangeRates["INR"] = 74.00; // 1 USD = 74.00 INR

exchangeRates["JPY"] = 110.00; // 1 USD = 110.00 JPY

}

void CurrencyConverter::displayCurrencies() {

cout << "Available Currencies:" << endl;

for (const auto& pair : exchangeRates) {

cout << pair.first << endl;

}

double CurrencyConverter::getExchangeRate(const string& fromCurrency, const string& toCurrency) {

return exchangeRates[toCurrency] / exchangeRates[fromCurrency];

}

void CurrencyConverter::convertCurrency() {

string fromCurrency, toCurrency;

double amount;

cout << "Welcome to the Currency Converter!" << endl;

displayCurrencies();

cout << "Enter the currency you want to convert from (e.g., USD): ";

cin >> fromCurrency;

cout << "Enter the currency you want to convert to (e.g., EUR): ";

cin >> toCurrency;

cout << "Enter the amount in " << fromCurrency << ": ";

cin >> amount;

if (exchangeRates.find(fromCurrency) != exchangeRates.end() &&

exchangeRates.find(toCurrency) != exchangeRates.end()) {

double rate = getExchangeRate(fromCurrency, toCurrency);

double convertedAmount = amount * rate;

cout << fixed << setprecision(2);

cout << amount << " " << fromCurrency << " is equal to "

<< convertedAmount << " " << toCurrency << endl;

} else {

cout << "Invalid currency entered. Please try again." << endl;

}

int main() {

CurrencyConverter converter;

char choice;

do {

converter.convertCurrency();

cout << "Do you want to perform another conversion? (y/n): ";

cin >> choice;

} while (choice == 'y' || choice == 'Y');

cout << "Thank you for using the Currency Converter!" << endl;

return 0;

}

Explanation:

Class Definition (CurrencyConverter):
- The CurrencyConverter class manages the exchange rates and handles the conversion process.
Exchange Rates Initialization:
- The constructor initializes a map of exchange rates, where each currency code (e.g., “USD”, “EUR”) maps to its exchange rate relative to a base currency (USD in this case).
Currency Display (displayCurrencies):
- The displayCurrencies method prints out the list of available currencies to the user.
Exchange Rate Calculation (getExchangeRate):
- The getExchangeRate method calculates the conversion rate from one currency to another using the formula:
  - rate = exchangeRates[toCurrency] / exchangeRates[fromCurrency]
Currency Conversion (convertCurrency):
- The convertCurrency method prompts the user to input the source currency, target currency, and amount.
- It then calculates and displays the converted amount using the exchange rate provided by getExchangeRate.
Main Program Loop:
- The main function initializes a CurrencyConverter object and allows the user to perform multiple conversions in a loop, until they choose to exit by entering ‘n’.

Possible Enhancements:

Dynamic Exchange Rates: Implement a system to fetch real-time exchange rates from an online API.
Support for More Currencies: Expand the list of available currencies.
Graphical Interface: Develop a GUI for the converter to enhance user interaction.
Error Handling: Improve error handling for invalid inputs or unsupported currency codes.

Currency Converter Gaming Project in C++

Explanation:

Possible Enhancements:

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