FStream help

[vexxt]

Hey all, just wondering how I would go about asking a user via cin, to open a specific output file? Whenever I try, it just opens a file named whatever they type in. I'm trying to "force" them to type in output.txt, it's for a class. I'm still very new to c++ so anything helps, thanks a ton!

Here's what I have now:

  do
    {
        output = "output.txt";
        cout << "Enter Output File Name: ";
        cin >> output;
        
        fout.open(output.c_str());
        if(fout.is_open())
        {
            cout << "Output File Opened Successfully." << endl;
            break;
        }
        else
        {
            cout << "Invalid file name." << endl;
            continue;
        }
    }
    while(!fout.is_open());

[Ganado]

If you want to force them to type in output.txt in order to open the file, you have to do something like:

string output;
cin >> output;
if (output == "output.txt")
{
    // open file for writing, presumably
    ofstream fout(output.c_str());
    fout << "hi \n";
}
else
{
    cout << "Invalid file name\n";
}

That's a really weird design though. Why have them have to type in output.txt if the only correct answer is output.txt? It's almost like it's a password.

[vexxt]

Yeah it is super weird, it's for our class so it's basically to help us check and clear cin and stuff. But anyways, thanks so much for your help!