Bit flags.

R. Clayton (rclayton@monmouth.edu)
Fri, 15 Dec 2000 13:07:24 -0500 (EST)

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I've been getting a number of questions about the open system call in
assignment 4 that indicate to me that some people have gotten a little rusty in
their ability to program with bit flags. Bit flags are a common programming
idiom, and anybody who presents themselves as a competent programmer must know
how to recognize, use, and implement bit flags, especially if they're working
in C/C++.

Those of you who want to knock some of the rust off might want to review
Section 16.4, Bitwise Operators, in How To Program C++ by Deitel & Deitel
(second edition). Or you can come to my office and I'd be happy to run you
through the Section step by step.

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