strtok - function which instead of using its own static...

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NAME strtok, strtok_r - extract tokens from strings SYNOPSIS #include <string.h> char *strtok(char * s ,const char * delim ); char *strtok_r(char * s ,const char * delim ,char ** ptrptr ); DESCRIPTION A‘token’ is a nonempty string of characters not occurring in the string delim ,followed by \0 or by a char- acter occurring in delim . The strtok() function can be used to parse the string s into tokens. The first call to strtok() should have s as its first argument. Subsequent calls should have the first argument set to NULL. Each call returns a pointer to the next token, or NULL when no more tokens are found. If a token ends with a delimiter ,this delimiting character is overwritten with a \0 and a pointer to the next character is savedfor the next call to strtok() .The delimiter string delim may be different for each call. The strtok_r() function is a reentrant version of the
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Unformatted text preview: function, which instead of using its own static buffer, requires a pointer to a user allocated char*. This pointer, the ptrptr parameter, must be the same while parsing the same string. BUGS Never use these functions. If you do, note that: These functions modify their first argument. These functions cannot be used on constant strings. The identity of the delimiting character is lost. The strtok () function uses a static buffer while parsing, so it’s not thread safe. Use strtok_r () if this matters to you. RETURN VALUE The strtok() function returns a pointer to the next token, or NULL if there are no more tokens. CONFORMING TO strtok() SVID 3, POSIX, BSD 4.3, ISO 9899 strtok_r() POSIX.1c SEE ALSO index (3), memchr (3), rindex (3), strchr (3), strpbrk (3), strsep (3), strspn (3), strstr (3) GNU 2000-02-13 1...
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