C++ using multiple strtok() -

hello have following text:

htttp://zbw.eu/stw/descriptor/17782-1> htttp://www.w3.org/2004/02/skos/core#inscheme> htttp://zbw.eu/stw> .  htttp://aims.fao.org/aos/agrovoc/c_2678> htttp://www.w3.org/2004/02/skos/core#exactmatch> htttp://zbw.eu/stw/descriptor/15918-5> . #komentar k totte hlouposti 

..and fucntion tokenize data, when new line occurs:

    bool iscorrect(char* buffer){     char* tok;      tok = strtok( buffer,"\n");      while(tok != null){                  bool = istriple(tok);          tok = strtok(null, "\n");     }      return true; } 

when have separate token want tokenize more, tok sent function istriple(char * token):

    bool istriple(char* token){     char* tok;      tok = strtok(token, " ");      while(tok != null){         tok = strtok(token, " ");     }      return true; } 

in function input token divided more tokens when white space occurs. in function want theese new tokens send function multiply , create new smaller tokens..

the problem is, when call istriple(), wont create new smaller tokens. freezes.

can anynone tell me, wrong?

thank you.

on first call, function strtok expects c string argument, first character used starting location scan tokens. in subsequent calls, function expects null pointer , uses position right after end of last token new starting location scanning.

so should not use function "simultaneously" several input strings.

see http://www.cplusplus.com/reference/cstring/strtok/ detailed description.