How do Including Paths Work?

This is a discussion on How do Including Paths Work? within the C++ Programming forums, part of the General Programming Boards category; Hi, So I wrote a bunch of classes for an old project that I want to use in a new ...

  1. #1
    Registered User IdioticCreation's Avatar
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    How do Including Paths Work?

    Hi,

    So I wrote a bunch of classes for an old project that I want to use in a new project. So I put each of the classes in its own directory (the h and cpp file), then put all those directories on in the top level of my project. Some of the classes are dependent upon each other, and originally all this source was just in the same directory. If a c or h file has an include with quotes "" where is it looking?

    If one of the classes is including another class, Can I just do:
    "class_directory/class.h"
    or should it be:
    "../class_directory/class.h"

    Maybe this is all dependent on the ide?

    Thanks, I couldn't find any info about this, didn't really know what I was searching for.

  2. #2
    Registered User manasij7479's Avatar
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    AFAIK
    "myheader.h" looks in the pwd.

    "../myheader.h" looks in its parent dir.

    And this behaviour isn't dependent on any thing. (I don't know if it can be modified by something in the makefile, though )
    Manasij Mukherjee | gcc-4.8.2 @Arch Linux
    Slow and Steady wins the race... if and only if :
    1.None of the other participants are fast and steady.
    2.The fast and unsteady suddenly falls asleep while running !



  3. #3
    Registered User IdioticCreation's Avatar
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    Alright, so any includes in a source file are going to look in their own working directory. I always get hung up on the simple stuff :P

    Thanks for the help though.

  4. #4
    C++まいる!Cをこわせ! Elysia's Avatar
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    They would look in the directory they are lying... files cannot have a working directory I presume; that would be reserved for applications.
    I cannot help but notice the ".c" though. If this is supposed to be C, then you posted on the wrong board!
    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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    Registered User manasij7479's Avatar
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    Quote Originally Posted by Elysia View Post
    They would look in the directory they are lying... files cannot have a working directory I presume; that would be reserved for applications.
    I cannot help but notice the ".c" though. If this is supposed to be C, then you posted on the wrong board!
    It'd then be the compiler's working dir, when reading that file .
    Manasij Mukherjee | gcc-4.8.2 @Arch Linux
    Slow and Steady wins the race... if and only if :
    1.None of the other participants are fast and steady.
    2.The fast and unsteady suddenly falls asleep while running !



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