char *strtok(char *s, const char *delim) ;
A sequence of calls to this function split str into tokens, which are sequences of
contiguous characters spearated by any of the characters that are part of
On a first call, the function expects a C string as argument for str, whose first
character is used as the starting location to scan for tokens. In subsequent calls,
the function expects a null pointer and uses the position right after the end of
last token as the new starting location for scanning.
To determine the beginning and the end of a token, the function first scans from the
starting location for the first character not contained in separator (which becomes
the beginning of the token). And then scans starting from this beginning of the
token for the first character contained in separator, which becomes the end of the
This end of the token is automatically replaced by a null-character by the function,
and the beginning of the token is returned by the function.
A pointer to the last token found in string.
A null pointer is returned if there are no tokens left to retrieve.
int main ()
char str ="- This, a sample string.";
char * pch;
printf ("Splitting string \"%s\" into tokens:\n",str);
pch = strtok (str," ,.-");
while (pch != NULL)
pch = strtok (NULL, " ,.-");
Output Will Be :
Splitting string "- This, a sample string." into tokens:
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