Read files with path given as pattern

Question

pwd
    A1.txt

I want to do this.

std::ifstream in("A*.txt");

Is there any method of doing this?

You can use [`glob.h`](http://pubs.opengroup.org/onlinepubs/009695399/basedefs/glob.h.html) to [gather files using wildcards](https://stackoverflow.com/questions/8401777/simple-glob-in-c-on-unix-system) — Cory Kramer, Apr 27 '17 at 13:11
please add more context to the problem and do clean up the "REad" in your title — Passer By, Apr 27 '17 at 13:14
@PasserBy, There is nothing to add. Currently I am not able to read the files. It is the only matching file btw — v78, Apr 27 '17 at 13:32

score 1 · Answer 1 · answered Apr 27 '17 at 15:22

There is no filename matching functionality in the C++ standard library.

POSIX provides the glob function in the glob.h header. Non-POSIX systems may have their own API for filename matching which may or might not differ from POSIX in behaviour.

If you cannot rely on non (C++) standard functionality, then you could of course implement filename matching yourself. However, prior to the upcoming C++17 standard, there is no way to get the file listing of a directory using the C++ standard library, so until then you have to rely on a platform specific API (or a wrapper library).

Read files with path given as pattern

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