How to open/close a text file using class methods?

Question

C++ / C#

When studying classes, the question arose: how to implement the opening / closing of a text file using a class method?

Answer 1

what for ? And why just open it?

Answer 2

void method()
{
ofstream fout("sample.txt");
fout << "Text text texT";
fout.close();
}
Here is the method to open/write/close. If you need to break these 3 actions into methods, then just create a global file variable and work with it.