In a single line of C code, execute the following program with the specified arguments: tail -n 20 data.txt

Coorect the Following C++ code: #include <bits/stdc++.h>#include <iostream>#include <fstream>#include <string>#include <cctype> using namespace std; // Function to print available currencies for exchangevoid printCurrencies() {    cout << "Available currencies for exchange: " << endl;    cout << "SAR --> Saudi Arabia Riyal" << endl;    cout << "KWD --> Kuwaiti Dinar" << endl;    cout << "QAR --> Qatar Riyal" << endl;    cout << "AED --> United Arab Emirates Dirham" << endl;    cout << "BHD --> Bahraini Dinar" << endl;    cout << "OMR --> Omani Rial" << endl;} // Function to convert currencydouble convertCurrency(string fromCurrency, string toCurrency, double amount) {    ifstream exchangeRateFile("ExchangeRate.txt"); // Open file for reading    string line;        double desiredRate=0;        while (getline(exchangeRateFile, line)) { // Read file…

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answer this in c++