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1. ºê¿ÉÒÔÏñº¯ÊýÒ»Ñù±»¶¨Ò壬ÀýÈ磺
   #define min(x,y) (x<y?x:y) //ÊÂʵÉÏÕâ¸öºê´æÔÚBUG
   µ«ÊÇÔÚʵ¼ÊʹÓÃʱ£¬Ö»Óе±Ð´ÉÏmin()£¬±ØÐë¼ÓÀ¨ºÅ£¬min²Å»á±»×÷ΪºêÕ¹¿ª£¬·ñÔò²»×öÈκδ¦Àí¡£
  
2. Èç¹ûºêÐèÒª²ÎÊý£¬Äã¿ÉÒÔ²»´«£¬±àÒëÆ÷»á¸øÄ㾯¸æ(ºê²ÎÊý²»¹»)£¬µ«ÊÇÕâ»áµ¼Ö´íÎó¡£ÈçC++Êé¼®ÖÐËùÃè
   ÊöµÄ£¬±àÒëÆ÷(Ô¤´¦ÀíÆ÷)¶ÔºêµÄÓï·¨¼ì²é²»¹»£¬ËùÒÔ¸ü¶àµÄ¼ì²éÐÔ¹¤×÷µÃÄã×Ô¼ºÀ´×ö¡£
3. ºÜ¶à³ÌÐòÔ±²»ÖªµÀµÄ#ºÍ##
   #·ûºÅ°ÑÒ»¸ö·ûºÅÖ±½Óת»»Îª×Ö·û´®£¬ÀýÈ磺
   #define STRING(x) #x
   const char *str = STRING( test_string ); strµÄÄÚÈݾÍÊÇ"test_string"£¬Ò²¾ÍÊÇ˵#»á°ÑÆäºóµÄ·ûºÅ
   Ö±½Ó¼ÓÉÏË«ÒýºÅ¡£
   ##·ûºÅ»áÁ¬½ÓÁ½¸ö·ûºÅ£¬´Ó¶ø²úÉúеķûºÅ(´Ê·¨²ã´Î)£¬ÀýÈ磺
   #define SIGN( x ) INT_##x
   int SIGN( 1 ); ºê±»Õ¹¿ªºó½«³ÉΪ£ºint INT_1;
4. ±ä²Îºê£¬Õâ¸ö±È½Ï¿á£¬ËüʹµÃÄã¿ÉÒÔ¶¨ÒåÀàËƵĺ꣺
   #define LOG( format, ... ) printf( format, __VA_ARGS__ )
   LOG( "%s %d", str, count );
   __VA_ARGS__ÊÇϵͳԤ¶¨Òåºê£¬±»×Ô¶¯Ì滻Ϊ²ÎÊýÁÐ±í¡£
5. µ±Ò»¸öºê×Ô¼ºµ÷ÓÃ×Ô¼ºÊ±£¬»á·¢Éúʲô£¿ÀýÈ磺
   #define TEST( x ) ( x + TEST( x ) )
   TEST( 1 ); »á·¢Éúʲô£¿ÎªÁË·ÀÖ¹ÎÞÏÞÖƵݹéÕ¹¿ª£¬Óï·¨¹æ¶¨£¬µ±Ò»¸öºêÓöµ½×Ô¼ºÊ±£¬¾ÍÍ£Ö¹Õ¹¿ª£¬Ò²¾ÍÊÇ
   ˵£¬µ±¶ÔTEST( 1 )½øÐÐÕ¹¿ªÊ±£¬Õ¹¿ª¹ý³ÌÖÐÓÖ·¢ÏÖÁËÒ»¸öTEST£¬ÄÇô¾Í½«Õâ¸öTESTµ±×÷Ò»°ãµÄ·ûºÅ¡£TEST(1)
   ×îÖÕ±»Õ¹¿ªÎª£º1 + TEST( 1)


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int arr[]={6,7,8,9,10};
int *ptr=arr;
*(ptr++)+=123;
printf("%d,%d",*ptr,*(++ptr));
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1. i2c_driver½á¹¹ÌåµÄprobe³ÉÔ±µÄÔ­ÐÍ£º
     int (*probe)(struct i2c_client *, const struct i2c_device_id *);
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C/C++ development with the Eclipse Platform
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