如何实现 strtok() ?# Programming - 葵花宝典
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char * strtok( const char * string, const char * delimiters );
Sequentially truncate string if delimiter is found.
第一部分：
If string is not NULL, the function scans string for the first occurrence of
any character included in delimiters. If it is found, the function overwrites
the delimiter in string by a null-character and returns a pointer to the token
, i.e. the part of the scanned string previous to the delimiter.
第二部分：
After a first call to strtok, the function may be called with NULL as str
Sequentially truncate string if delimiter is found.
第一部分：
If string is not NULL, the function scans string for the first occurrence of
any character included in delimiters. If it is found, the function overwrites
the delimiter in string by a null-character and returns a pointer to the token
, i.e. the part of the scanned string previous to the delimiter.
第二部分：
After a first call to strtok, the function may be called with NULL as str