Problem with #include

This is a discussion on Problem with #include within the C++ Programming forums, part of the General Programming Boards category; Hello, In my source i include a file tat holds all the includes and some functions and voids. Now when ...

  1. #1
    Registered User
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    Sep 2002
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    Problem with #include

    Hello,

    In my source i include a file tat holds all the includes and
    some functions and voids.
    Now when my header file named "test.h" has this:

    #include <iostream>

    void something()
    {
    cout << "Im printing something" << endl;
    }

    And i compile it with my source, Im getting error messages
    with the void in my header file that are pointing out that
    "#include <iostream>" isn't even being used in the header file
    I can use it in my source, but not in the header file???
    What am i doing wrong?

  2. #2
    Veni Vidi Vice
    Join Date
    Aug 2001
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    343
    Donīt really understand what you mean. From where I can se you are trying to compile a header file??? In c++ you cannot compile header files just source files.

  3. #3
    Pursuing knowledge confuted's Avatar
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    you can't have code/functions in a header file, just definitions of things.
    Away.

  4. #4
    Microsoft. Who? MethodMan's Avatar
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    So in test.cpp you will have a function

    Code:
    void print()
    {
      cout << "something" << endl;
    }
    and in test.h

    you just have the prototype of the print function so

    Code:
    void print();
    -MethodMan-

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  5. #5
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    (this is my header file)

    #include <iostream>

    void bla()
    {
    cout << "bla"; // I can't do this!
    }

    void bla2()
    {
    printf("bla"); // But i can do this ?1
    }


    I'ts like it isnt using iostream in the functions in the header file

    (im not compiling the header file, im including it in my source)

  6. #6
    Used Registerer jdinger's Avatar
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    You need to have this line:
    Code:
    using namespace std;
    under #include <iostream>

    If not then each call to cout needs to read:
    Code:
    std::cout<<"words"<<endl;

  7. #7
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    DOH! Of course , sorry i forgot

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