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Posted by PavalDaniel [send private reply] at March 03, 2002, 01:09:48 PM Does anyone know how to write a simple header file?
Is it enough to write:
printf("This is a program");
in a *.h file so that if you include it, the text is displyed on the screen when you run the program?
Posted by Psion [send private reply] at March 03, 2002, 01:12:30 PM When you #include something, the text is just inserted as is. A "header file" is only valid when you insert it someplace where it would be valid if you just copied and pasted it there.
Posted by metamorphic [send private reply] at March 03, 2002, 02:00:13 PM Also header files are most commonly used to hold function prototypes and class definitions. Normally code that preforms a task (as opposed to code that tells the compiler what a class or function does) such as your code above, would be placed in another .c or .cpp file and added to a project.
Posted by Mycroft [send private reply] at March 05, 2002, 06:57:42 PM a header file includes preprocesser directives so basically every has the # in front of it. The most basic header would be to put all the #include <*.h> file you use in your program:
Then you save it with a .h extension. Now instead of puting in all those includes in the .c or .cpp file just use your header.
I recommend you got to a place like www.gametutorials.com, they got a lot of basic information on using the #define, #if, ect. preprocessor statements. Headers are really cool you could basically write an entire program in it.
Posted by CodeRed [send private reply] at March 13, 2002, 11:39:37 AM Umm... you can do that I guess... but the most common use is for function prototypes and class definitions, like metamorphic said.
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