Thread: Help with includes

  1. #1
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    Help with includes

    i'm having a problem with gcc can anyone help me


    I have two archives
    test1.c e test2.c

    in test1.c i have :

    int Area ;
    ...
    include "test2.c"
    ...

    in test2.c i have:
    ...
    Area = Area+10
    ...

    this led me to a error :
    Area undeclared (first use this function)

    why this ocorrur, i'm newbie in c.

  2. #2
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    Don't #include a .c file - create a separate header file for "test2.c" (e.g. "test2.h") and include that. See here for a simple demonstration: How to create a C project with multiple source files

    this led me to a error :
    Area undeclared (first use this function)
    We'd have to see the source to know what you're doing wrong. But it sounds like you just want "test2.c" to contain a function that receives an argument, adds ten, and returns the result. Then you call that function from "test1.c" (with "test2.h" included, of course).

    You also might consider looking into the "extern" keyword.
    Last edited by Matticus; 02-26-2015 at 09:01 AM.

  3. #3
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    Why are you including a source file? Source files should be added to your project, not included.

    You haven't shown enough content for me to determine your actual problem. I suggest you post the smallest complete program that illustrates your problem.


    Jim

  4. #4
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    Multiple Source Files C
    Extern to share variables

    Not to mention, you should avoid global variables.
    Quote Originally Posted by anduril462 View Post
    Now, please, for the love of all things good and holy, think about what you're doing! Don't just run around willy-nilly, coding like a drunk two-year-old....
    Quote Originally Posted by quzah View Post
    ..... Just don't be surprised when I say you aren't using standard C anymore, and as such,are off in your own little universe that I will completely disregard.
    Warning: Some or all of my posted code may be non-standard and as such should not be used and in no case looked at.

  5. #5
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    Quote Originally Posted by jimblumberg View Post
    Why are you including a source file? Source files should be added to your project, not included.

    You haven't shown enough content for me to determine your actual problem. I suggest you post the smallest complete program that illustrates your problem.


    Jim
    Its a legacy code

  6. #6
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    i dont put all code becaus is too big

  7. #7
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    Its a legacy code
    What's this have to do with anything? You still should never include a source file. If this is a "legacy" system my suggestion is that you first fix this problem, then maybe some of your errors might "magically" disappear. Plus you still haven't shown enough information for me to even guess as to what is wrong.

    i dont put all code becaus is too big
    That's why I suggested showing the smallest possible complete program that illustrates the problem.

    By the way, what do you consider too big?


    Jim

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