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how is const better compared to #define

Discussion in 'C' started by micsom, Apr 5, 2010.

  1. micsom

    micsom New Member

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    Its said that using const is better compared to #define...because const identifier uses compiler symbol table..

    can some1 please explain why? and How?...

    Thanks
     
  2. xpi0t0s

    xpi0t0s Mentor

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  3. micsom

    micsom New Member

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    thanks for the reply..i am actually interested in how symbol table comes into the picture for const and #define...

    i was googling for it when i came across it..but i didn't find any satisfactory answers.

    :)
     
  4. xpi0t0s

    xpi0t0s Mentor

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    const defines a variable which goes into the compiler's symbol table with all other variables. #define is just a lexicographical thing sorted out by the parser; the compiler never sees #defines.
     

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