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What do .c and .h file extensions mean to C?
(6 answers)
Closed 4 years ago.
What is the significance of the .h extension in header files of a C or C++ program?
to mark a header file, .h stands for header as much as .cpp stands for C Plus Plus, did I get your question right?
No significance. It is just a convention for programmers to quickly recognize what is in the file. Standard C++ library headers don't have it.
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This question already has answers here:
Why have header files and .cpp files? [closed]
(9 answers)
What should go into an .h file?
(12 answers)
Closed 11 months ago.
I'm learning C ++ and I have a question about header files. Are they only for classes? If I have some functions and want to use them in several files, should I write the declaration in the h file and the definition in the cpp file? Thanks for the help.
This question already has answers here:
Why have header files and .cpp files? [closed]
(9 answers)
Closed 1 year ago.
I may be thinking/using header files the wrong way, but currently I'm using 1 .cpp file and the rest are all in header files. I have things like a screen which is an array of characters in a header file, I have the function to draw the screen to the terminal in a header file, I have all my global variables in a header file, but I have game.cpp where all those files will be used.
I am doing this wrong? I feel like at this point there's no reason to use .cpp files. Header files seem to be so much better because I avoid the issue of redeclaration.
The primary purpose of a header file is to propagate declarations to code files. Header files allow us to put declarations in one location and then import them wherever we need them. This can save a lot of typing in multi-file programs. This program prints “Hello, world!” to the console using std::cout.
This question already has an answer here:
Include statement in a Fortran file
(1 answer)
Closed 4 years ago.
What is the difference between the "include" statement and the preprocessor "#include" of Fortran?
Files included by the preprocessor #include directive can contain #defines whereas files included with the INCLUDE statement must contain only FORTRAN statements.
This question already has answers here:
Why have header files and .cpp files? [closed]
(9 answers)
include header file in its own source file? [closed]
(1 answer)
Closed 4 years ago.
Why is there a need to include the header file of a class into the implementation file of the same class??
Does it serve a purpose??
Since i thought it is needed only where we need to use that class.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Displaying the #include hierarchy for a C++ file in Visual Studio
I have a cpp file that includes multi-level header files (nested), and so difficult for me to know exactly what final header files are included. It apparently includes one header file, but I want to know where is that header file actually included (must be included in some other header file which is included by this cpp file).
How can I get a list of header file map included by compiler?
Thanks
You can add the /showIncludes switch to the compiler. Then it will list all includes for the cpp files.
More info can be found here.