Where is 'errno' declared? How can I use it in my program?
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Distribution: WinXP SP2 and SP3, W2K Server, Ubuntu
Posts: 313
Rep:
Where is 'errno' declared? How can I use it in my program?
I used errno in a funciton that main() calls and got an undeclared identifier compiler error. Should I declare errno? Isnt it already declared as an extern in each system funciton?
Distribution: At home: Arch, OpenBSD, Solaris. At work: CentOS, Debian, Ubuntu
Posts: 3,625
Rep:
Did you #include <errno.h> -- I'm not 100% sure (and too lazy to look it up), but I think you can only access erno in your program if you include this header, which has the declaration (or declare errno yourself, but probably best to include the header).
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