getopt.h vs unistd.h

[Gregory D Moncreaff]

where should getopt() be defined?

In cygwin, it seems to be in
getopt.h

but most others have it in
unistd.h

reference:

http://www.rt.com/man/getopt.3.html
http://www.opengroup.org/onlinepubs/7908799/xsh/getopt.html



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