Exitting a void 'function' ?

This is a discussion on Exitting a void 'function' ? within the C++ Programming forums, part of the General Programming Boards category; Hello all... Ive tried searchin the boards, but without much luck (mainly because peoples thread titles tend to suck at ...

  1. #1
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    Exitting a void 'function' ?

    Hello all...

    Ive tried searchin the boards, but without much luck (mainly because peoples thread titles tend to suck at descriping what they are all about )

    Well, my problem is this:

    In a program I have to call a void 'function' (it's not really a function, but whats the other word? Procedure in VB ). In this 'function' I need to exit it at a certain point. Like:

    if (cond)
    exit void;

    .. I don't know if this is possible though? I can't make it into an int function and just return 0 btw. Can anyone give me a hint?

    Thx in advance

  2. #2
    erstwhile
    Join Date
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    For a function with a 'return type' of 'void' just use 'return' if you need to; eg
    Code:
    int FunctionThatReturnsInt()
    {
    int the_answer=42;
    return the_answer;
    }
    
    void FunctionThatDoesNotReturnAnything()
    {
    if (some_condition_is_met)
      {
      return;
      }
    //function returns anyway
    }
    CProgramming FAQ
    Caution: this person may be a carrier of the misinformation virus.

  3. #3
    Code Goddess Prelude's Avatar
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    >it's not really a function, but whats the other word?
    Procedure. But in C++, a function is a function, even if it doesn't have a return value.

    >Can anyone give me a hint?
    You can use return without an operand.
    Code:
    void foo()
    {
      // stuff
    
      if ( condition )
        return;
    
      // more stuff
    }
    My best code is written with the delete key.

  4. #4
    Ethernal Noob
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    you could also only branch on the not true condition, and do nothing otherwise

  5. #5
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    hehe, can't believe I didnt try that myself xD

    Thx ppl

  6. #6
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    Using return without operand will give you a compiler error on MSVC++ 2003. It's worth checking if it's legal as I know that the 2003 edition is pretty compliant to the standards.

  7. #7
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    >> Using return without operand will give you a compiler error on MSVC++ 2003. It's worth checking if it's legal as I know that the 2003 edition is pretty compliant to the standards.

    It is completely legal and works fine in VC++ 2003. Perhaps you are thinking of using return; in a function that doesn't specify void as its return type.

  8. #8
    Algorithm Dissector iMalc's Avatar
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    Quote Originally Posted by Daved
    >> Using return without operand will give you a compiler error on MSVC++ 2003. It's worth checking if it's legal as I know that the 2003 edition is pretty compliant to the standards.

    It is completely legal and works fine in VC++ 2003. Perhaps you are thinking of using return; in a function that doesn't specify void as its return type.
    Yes he MUST be!

    Slap on the wrist to Desolation for not reading entire thread and engaging brain before posting

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