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In earlier classes, the function declarations and definitions were supposed to be before the main function. But if you have a large amount of code, that can get a little tedious. | In earlier classes, the function declarations and definitions were supposed to be before the main function. But if you have a large amount of code, that can get a little tedious. | ||
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Kritin Gokharu | Kritin Gokharu | ||
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| + | [[2011_Spring_ECE_264_Lu|Back to ECE264, Spring 2011, Prof. Lu]] | ||
Latest revision as of 05:25, 11 July 2012
ECE264: Header Files
In earlier classes, the function declarations and definitions were supposed to be before the main function. But if you have a large amount of code, that can get a little tedious.
An easy way to get around that is by using different files.
A header file is a ".h" file, like stdio.h. To make a header file, open an empty file with the following contents:
(hash)ifndef EXAMPLE_H
(hash)define EXAMPLE_H
(function declarations here)...
(hash)endif
The function definitions can come in another ".c" file. where you need to include your header file. To compile these files you need to make use of a Makefile.
-- Kritin Gokharu
