Returning a filename

[emp1953]

I am using Linux 4.2 on a Dell. GNU gcc compiler.

I have a directory full of files named as follows:

001_fname_monday.dat
002_fname_tuesday.dat
003_fname_wednesday.dat
..
..
..
255_fname_christmas.dat

I am writing a function
std::string function return_fname(int cmd_id)

where an integer cmd_id is passed in for example 003

I need to parse through a directory of filenames looking for the filename that starts with 003, and return it.

I have no idea where to begin to ID the individual filenames in the list, capture the filename. Is there a built in function that will do this, is it a stream function, a string function, as you can see the filenames are all structured differently except that the first 3 characters is a 3 digit number and the extension is .dat Each file has a unique first 3 characters.

Thanks

emp

[kbw]

scandir can tell you all the file names in a a directory. You can then filter out the ones that begin with your ID.

A description of scandir is at:
http://linux.die.net/man/3/scandir

A quick search on the web can show examples of using scandir.

[emp1953]

Thank You, that looks like it fits the need.