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2. Why am I getting a 'multiple definition' error? how do i fix it?

   stackoverflow.com/questions/41597744

   2. Add the inline keyword before test2 to get around the one definition rule. – 0x5453. Jan 11, 2017 at 18:08. 1. Nothing to do with your problem, but names like _TEST_HPP_ are reserved in C++. Lose the leading underscore. – user2100815.

3. How do I understand this compiler error: "multiple definition of...

   stackoverflow.com/questions/7757234

   As I've mentioned in my comment, the problem is with multiple definitions of h_meta and h_meta_len - be it due to them being defined in a .h file that's included in more than one translation unit, or due to .c (with the definition of the variables, either directly or in an included .h) being included in another .c. Include guards will save you ...

4. linker - Multiple Definitions of... | C++ - Stack Overflow

   stackoverflow.com/questions/29357841

   1. In C++, you should separate declarations from implementation in order to avoid redefinitions (as in the situation you have described). Put the declarations into a header file filename.h, with some sort of include guard inside (either #def-based or #pragma once); put your definitions in filename.cpp, which includes the header via #include ...

5. How to prevent multiple definitions in C? - Stack Overflow

   stackoverflow.com/questions/672734

   In main.c, replace #include "test.c" by #include "test.h". A last point: with your programs being more complex, you will be faced to situations when header files may be included several times. To prevent this, header sources are sometimes enclosed by specific macro definitions, like: #ifndef TEST_H_INCLUDED.

6. Multiple definitions of a function template - Stack Overflow

   stackoverflow.com/questions/235616

   Suppose a header file defines a function template. Now suppose two implementation files #include this header, and each of them has a call to the function template. In both implementation files the function template is instantiated with the same type. One may expect the linker would complain about multiple definitions of f ().

7. "Multiple definition", "first defined here" errors

   stackoverflow.com/questions/30821356

   However, for some reason making additional source/header files within Server or Client project always causes multiple definition of (...) and first defined here errors. Example: commands.h (in root dir of the Client project) commands.c (in root dir of the Client project) main.c (in root dir of the Client project) Errors:

8. how to fix multiple definition error in c++? - Stack Overflow

   stackoverflow.com/questions/35570863

   1. You define the variables start, end and count in the header files. That means every source file that includes that header file will have those variables defined in its translation unit. You should only declare them in the header file if you need to have those variables global, and then define them in a single source file.

9. c++ - multiple definition in header file - Stack Overflow

   stackoverflow.com/questions/2727582

   You can either mark the function above and make it "inline" so that multiple translation units may define it: return o << Cplx.m_Real << " i" << Cplx.m_Imaginary; Or you can simply move the original definition of the function to the "complex.cpp" source file.

10. Multiple definition and header-only libraries - Stack Overflow

    stackoverflow.com/questions/8201944

    Solution is: You should define the entities you get Multiple definition errors for only once. For Functions: Declare the function prototypes in header file (which you include in other source files) and define the function in one and only one source file. For Global variables:

11. multiple definitions error in c++ and solution to solve this...

    stackoverflow.com/questions/18914122

    This means the class definition needs to be put in a header file, so that it can be included wherever in all files which use the class. This is OK, because the standard says that a class can be defined in multiple translation units, as long as all definitions are identical. A class definition typically looks something like this: