Thread: Functions with varying augments

  1. #1
    Registered User IdioticCreation's Avatar
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    Functions with varying augments

    Hey, I'm curious how I can make a function that can receive a different number of augments and not produce an error.

    All of the augments in my function are coordinates, some times it needs to manage only 2 augments and some times it may need to manage more.

    My compiler gives me this error:
    "too few augments to function `int check_aligned(int,int,int,int,int)' at this point in file"

    Thanks

  2. #2
    The larch
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    Most probably you'd need arrays.

    Code:
    int check_aligned(int* values, int how_many);
    Or preferably a vector:

    Code:
    int check_aligned(std::vector<int> values);

  3. #3
    Its hard... But im here swgh's Avatar
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    Post some code, will be easier to understand what you want to acheive.

    From what I understand, the function prototype and the call to the function ( ie: passing of the arguments ) must match
    Double Helix STL

  4. #4
    Its hard... But im here swgh's Avatar
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    EDIT: Sorry, I forgot about vectors!!
    Double Helix STL

  5. #5
    Frequently Quite Prolix dwks's Avatar
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    If you actually need a variable number of arguments and not arrays, then either look up the old macros in <cstdarg> (bad idea) or overload the function or use default arguments.
    Code:
    // Overloading
    void function(int x) {}
    void function(char c, float z) {}
    
    function(4);
    function('A', 1.2);
    
    // Default arguments
    void functionx(int x = 1, int y = 1);
    
    void functionx(int x, int y) {}
    
    functionx();
    functionx(1);
    functionx(1, 2);
    [edit] There are lots of tutorials that cover this, one is: http://www.functionx.com/cpp/Lesson05.htm [/edit]
    Last edited by dwks; 11-24-2006 at 04:36 PM.
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
    "Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
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  6. #6
    Registered User IdioticCreation's Avatar
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    Thanks anon, I understand the one with the arrays, but how do you use the vectors?

  7. #7
    Frequently Quite Prolix dwks's Avatar
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    Yes, I like providing links to tutorials . . . http://www.cprogramming.com/tutorial/stl/vector.html
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
    "Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
    "The only real mistake is the one from which we learn nothing." -- John Powell


    Other boards: DaniWeb, TPS
    Unofficial Wiki FAQ: cpwiki.sf.net

    My website: http://dwks.theprogrammingsite.com/
    Projects: codeform, xuni, atlantis, nort, etc.

  8. #8
    Registered User IdioticCreation's Avatar
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    Ha, I'm sorry, and also a little lazy. Thank you very much.

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