best-practice on C header files with #ifndef #define #endif

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Published on 2010-05-30T16:06:36Z Indexed on 2010/05/30 16:12 UTC
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what is concerned best practice regarding the following "pattern"?

#ifndef BLAFOO_H
#define BLAFOO_H
/* ...
 * ...
 */
#endif /* BLAFOO_H */

how should i name the header in the #define directive? i've seen all from said BLAFOO_H to __BLAFOO_H to _BLAFOO_H_ etc..

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best-practice on C header files with #ifndef #define #endif

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