Header file problem

This is a discussion on Header file problem within the C++ Programming forums, part of the General Programming Boards category; Hi, I have 2 cpp files, each one including the test.h header file. my header file seems like this: #ifndef ...

  1. #1
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    Header file problem

    Hi, I have 2 cpp files, each one including the test.h header file.

    my header file seems like this:

    #ifndef TESTFILE
    #define TESTFILE

    int test;
    char *hello;

    #endif

    The problem is that the linker says
    'int test (?test@@3HA) already defined in test.obj'
    'char *hello (?hello@@3HA) already defined in test.obj'

    Ive tried pragma once, but the above, shouldnt fix the problem??
    It doesnt..
    Please help, thanks!

  2. #2
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    try manually deleting the obj file
    "The most common form of insanity is a combination of disordered passions and disordered intellect with gradations and variations almost infinite."

  3. #3
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    without seeing more of your code I would be suspicious of a name clash.

  4. #4
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    Name clash? Meaning?
    The rest of my code are 2 cpp files including the same header.

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    Oh, if I delete the obj file, it works! but isnt there an automated way??

  6. #6
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    force the compiler to recompile all. don't remember how right now to tired. Lazy compilers *sigh*
    "The most common form of insanity is a combination of disordered passions and disordered intellect with gradations and variations almost infinite."

  7. #7
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    Ohh yes!! works! Thank you man, you saved my life )

  8. #8
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    Oups, no, it didnt work.. Sorry, my mistake, i forgot to include the header file 2nd time.. still the same error..

  9. #9
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    post the files so I can see what they look like to determine what the problem is...
    "The most common form of insanity is a combination of disordered passions and disordered intellect with gradations and variations almost infinite."

  10. #10
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    The mistake is: u DEFINE a variable in a header. Remember: always DECLARE but not DEFINE variables in header file.
    Move the
    Code:
    int test;
    char *hello;
    to a cpp file; And write in header file like this:
    Code:
    extern int test;
    extern char*hello;
    Hello, everyone.

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