File io how to do something 1

[Sudoku]

I atempted to make a directory for files. To acesses the files I tried to do this:

ifstream fin(sName);

The variable sName is the name of the file + .txt. This does not work. I not certain if this is even the right direction. Any help or ideas would be apreciated

 

[ArkM]

To create a new directory use (non-standard) library function _mkdir from <direct.h>:

if (_mkdir("D:\\Moo\\Boo"))
{
   // returns non-zero on error
}

Well, a new directory is empty (no files).
Can you explain your problem with ifstream? Where is a path to your new directory in sName?
This does not work - what?..

 

[cpjust]

If the file isn't in the same directory as your .exe, you need to include the path + filename.
Ex.

string sName( "C:/temp/filename.txt" );

 

[Sudoku]

Oh sorry the directory will be with the .exe. The point of the variable as the file name is to allow the user to name their files.

 

[cpjust]

Does the file exist before you try to open it?
Is the file already opened by another program?
Do you have sufficient permissions to read the file?

 

[uolj]

If sname is a C++ string, you must use:

ifstream fin(sName.c_str());

If it is a character array, make sure you are concatenating the ".txt" part properly with strcat, or switch to C++ strings.

 

[Sudoku]

Thanks that made it work