need help to getin ifstream::open to open a file and getline from it

I am just trying to open this file and use the getline function to read from the file but I cant seem to figure out why it is not working. I have stepped through it many times and the fileOpen variable is being loaded correctly with the file im trying to open, so Im unsure on why it won开发者_如何转开发t open, to use getline with it. I would just like to be able to read through the file with getline, all of this is done in a recursive function to eventually read through all the files in directories. Let me know if you need more information on what exactly im doing.

string line;
ifstream file;
string fileOpen;
bf::directory_iterator dirIter ( fullPath ); //fullPath is type bf::path, passed into the function
fileOpen = (dirIter->path().filename());

file.open(fileOpen);
getline(file, line);

The path::filename function returns the base filename. If you have a path of "foo\bar.txt", path::filename will return "bar.txt". So unless "foo\" is in the current directory, the file probably doesn't exist.

What you're more likely looking for is this:

file.open(dirIter->path().native());

Or, you can use the boost::filesystem iostream types:

#include <boost/filesystem/fstream>

bf::ifstream file;
bf::directory_iterator dirIter ( fullPath ); //fullPath is type bf::path, passed into the function
file.open(dirIter->path());