Handling command line flags in C/C++

Question

I am looking for a very simple explanation/tutorial on what flags are. I understand that flags work indicate a command what to do. For example:

rm -Rf test
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Answer 1

GNU libc, which is very likely available on your system, has a library for this called getopt that can be used to parse the options in a sensible fashion. There are examples to get you started in the documentation linked below.

http://www.gnu.org/software/libc/manual/html_node/Getopt.html#Getopt