example2_appending.cpp

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#include <iostream>
#include <fstream>

int main() {
    std::ofstream outFile("log.txt", std::ios::app);
    
    if (outFile.is_open()) {
        outFile << "Appending this line to the file." << std::endl;
        outFile.close();
        std::cout << "Successfully appended to the file." << std::endl;
    } else {
        std::cerr << "Unable to open file" << std::endl;
    }

    return 0;
}