In modern C++ (C++17 and beyond), you can use the filesystem library to check if a directory exists.
Here’s how to create and use a temporary file in current C++.
Back in the day, data storage and retrieval were pretty cumbersome.
In C++, command-line arguments are received in main() as an array of character pointers.
main()
C++ offers several ways to write to a text file, but one of the most straightforward methods is using the <fstream> library which provides the ofstream (output file stream) class designed for file writing operations.
<fstream>
ofstream
In C++, writing to standard error can be achieved using the cerr stream, which is part of the standard library.
cerr