title: Determining files in a directory
body: <p>I come from a C# background and I am working on a C++ project.  I need to open files in a directory, then process that data in the files.  The problem is on my target environment (Greenhills Integrity), I cannot access a "directory".  It seems C++ does not have a concept of a directory.  Why not?  This problem is simple in C#.  I cannot link to any big library(BOOST or dirent) to get the files.  I can open a file using fopen, but I won't always know the file names, so I have to "strcat" the directory to each filename in order to "fopen" the files.  </p>
  
  <p>I need a way to just get the file names in a directory without using an external API.  Is that possible?</p>