Username as directory name

[LittleQuick]

CreateDirectory("c:\\u", NULL);
cout << "Enter Username : " << endl;
cin >> username;
CreateDirectory("c:\\u\\"username"", NULL);

Clearly that code does not work. How can I make a directory using the user inputted information?

[Disch]

string username;
cin >> username;

string path = "C:/u/" + username;

CreateDirectoryA(path.c_str(), NULL);

A few things to note:

1) '/' for directory separator instead of '\\' (easier, less error prone, more portable, better habit to get into)
2) CreateDirectoryA instead of CreateDirectory (because we have a char string and not a TCHAR string)

For more on point #2, see this:
http://cplusplus.com/forum/articles/16820/

[LittleQuick]

Very nice! If I change that I will have to change

ofstream myfile;
myfile.open ("C:/u/"...".txt");

I don't know how to make that work, can I have some help with that? Plus I thought C++ did not read /, that's why I changed to \\. Are they both accepted then??

[Disch]

If I change that I will have to change

It's the same thing. Just build your full string in a string, then call c_str:

string filename = "C:/u/" + whatever + ".txt";
myfile.open( filename.c_str() );

Plus I thought C++ did not read /, that's why I changed to \\. Are they both accepted then??

It's not a C++ thing as much as it's an API thing.

And yes, both / and \\ are accepted as directory separators on Windows, but only / is accepted on other platforms (hence why / should be preferred)