Confusion on header and source files

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    Confusion on header and source files

    Hello all, from my C++ book, I have just passed the section in which I create basic functions just within the main method, and running it from there. Now I'm trying to learn on compiling separate files together, with the header and source file. However I am sort of confused as the difference between these two.

    From what I think I understand, the main file reads from the header and the header from the source? The header is the one that declares the functions and the types of data that the source files will be dealing with? Then the source file is the one with the actual body of the function?

    Is what I described basically it? Am I missing anything else? I only have a vague understanding of it (if I am correct at all...), I would like to have a strong understanding of it though...Thanks!

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    and the hat of wrongness Salem's Avatar
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    There's a FAQ.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
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    C++まいる!Cをこわせ! Elysia's Avatar
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    Header files are included by source files.
    Source files are compiled and linked.
    Header files contain declarations.
    Source files contain implementation and source code.

    Any good IDE will perform this for you, the compiling and linking of the correct files.
    Here is a list of popular ones: http://cpwiki.sf.net/IDE

    (FAQ? FAQ where? I couldn't find it in the FAQ...)
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  4. #4
    and the hat of wrongness Salem's Avatar
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    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

  5. #5
    C++まいる!Cをこわせ! Elysia's Avatar
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    Aha, there it is.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

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