why no need to return a value in GNU C/C++ ??

This is a discussion on why no need to return a value in GNU C/C++ ?? within the Linux Programming forums, part of the Platform Specific Boards category; I'm using gcc 4.4.1 C/C++ compiler for programming in Ubuntu. The thing I noticed is, The program works with no ...

  1. #1
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    Question why no need to return a value in GNU C/C++ ??

    I'm using gcc 4.4.1 C/C++ compiler for programming in Ubuntu.
    The thing I noticed is,
    The program works with no errors even though I don't type the function to be as ' void main ' or ' return 0 ' ( or return any value) at the end of the program..
    It absloutely works !!

    But not in Turbo C/C++ IDE ( which we use in Windows ), a DOS compiler !!

    Why ???

  2. #2
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    Try using the -Wall and -Wextra switches when you compile, and see what happens then. BTW, void main is never valid, at any time - main returns an int.

  3. #3
    'Allo, 'Allo, Allo
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    Quote Originally Posted by suryak View Post
    I'm using gcc 4.4.1 C/C++ compiler for programming in Ubuntu.
    The thing I noticed is,
    The program works with no errors even though I don't type the function to be as ' void main '
    Because leaving out 'void main' is the only good thing you can do with it.
    or ' return 0 ' ( or return any value) at the end of the program..
    Because C++ doesn't require return at the end of main
    But not in Turbo C/C++ IDE ( which we use in Windows ), a DOS compiler !!

    Why ???
    Because Turbo C++ was made before there was an agreement as to what constituted C++, also it's rubbish.

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