Why do the enum values this way??

This is a discussion on Why do the enum values this way?? within the C Programming forums, part of the General Programming Boards category; Code: enum tx_op { P_TX = 1, PU_TX = 1 + 1, RT_TX = 1 + 2, GET_TX = 1 ...

  1. #1
    Registered User
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    May 2010
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    Why do the enum values this way??

    Code:
    enum tx_op {
            P_TX = 1,
            PU_TX = 1 + 1,
            RT_TX = 1 + 2,
            GET_TX = 1 + 3,
            PUT_TX = 1 + 4,
    };
    What's the purpose of the 1+1, 1+2, etc.. why not just do 2,3,4......??

  2. #2
    C++ Witch laserlight's Avatar
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    23,618
    Yeah, it looks like cruft. It could have been written as:
    Code:
    enum tx_op {
        P_TX = 1,
        PU_TX,
        RT_TX,
        GET_TX,
        PUT_TX,
    };
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

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