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cº¯Êý: strtok ºÍ strtok_r

º¯ÊýÃû:   strtok    
  ¹¦     ÄÜ:   ²éÕÒÓÉÔÚµÚ¶þ¸ö´®ÖÐÖ¸¶¨µÄ·Ö½ç·û·Ö¸ô¿ªµÄµ¥´Ê    
  ÓÃ     ·¨:   char   *strtok(char   *str1,   char   *str2);    
  ³ÌÐòÀý:    
   
  #include   <string.h>    
  #include   <stdio.h>    
   
  int   main(void)    
  {    
        char   input[16]   =   "abc,d";    
        char   *p;    
   
        /*   strtok   places   a   NULL   terminator    
        in   front   of   the   token,   if   found   */    
        p   =   strtok(input,   ",");    
        if   (p)       printf("%s\n",   p);    
   
        /*   A   second   call   to   strtok   using   a   NULL    
        as   the   first   parameter   returns   a   pointer    
        to   the   character   following   the   token     */    
        p   =   strtok(NULL,   ",");    
        if   (p)       printf("%s\n",   p);    
        return   0;    
  }   
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abc
d
1. strtok½éÉÜ
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C/C++Ò²¿ÉÒÔдµÄºÜ°²È«£¡

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enum example
{
item1 = 0,
item2,
item3,
item4,
item5,
max      /* when you want to add element,please add before this */
};
        µ±ÄãʹÓÃËüµÄʱºò£º
example ex1;
        i ......

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×ªÔØ×Ô: http://bbs.chinaitlab.com/thread-304041-1-1.html
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Ò»¡¢Òª¶Á ......

¡¾C\C++ÓïÑÔÈëÃÅÆª¡¿ µ÷ÊÔ»ù´¡

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C multi line macro: do/while(0) vs scope block

http://docs.google.com/View?docid=ajbgz6fp3pjh_2dwwwwt#_38239340844832237
It is not about optimization.
The whole idea of using 'do/while' version
is to make a macro which will
expand into a regular statement, not into a
compound statement. This is
done in order to make the use of function-s ......
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