выделять слова можно функцией
Find the next token in a string.
char *strtok(
char *strToken,
const char *strDelimit
);
Parameters
strToken - String containing token or tokens.
strDelimit -Set of delimiter characters.
Returns a pointer to the next token found in strToken. They return NULL when
no more tokens are found. Each call modifies strToken by substituting a
NULL character for each delimiter that is encountered.
On the first call to strtok, the function skips leading delimiters and returns
a pointer to the first token in strToken, terminating the token with a null
character. More tokens can be broken out of the remainder of strToken by
a series of calls to strtok. Each call to strtok modifies strToken by
inserting a null character after the token returned by that call. To read
the next token from strToken, call strtok with a NULL value for the
strToken argument. The NULL strToken argument causes strtok to search for
the next token in the modified strToken. The strDelimit argument can take
any value from one call to the next so that the set of delimiters may vary.
Note Each function uses a static variable for parsing the string into tokens.
If multiple or simultaneous calls are made to the same function, a high
potential for data corruption and inaccurate results exists. Therefore,
do not attempt to call the same function simultaneously for different
strings and be aware of calling one of these functions from within a loop
where another routine may be called that uses the same function. However,
calling this function simultaneously from multiple threads does not have
undesirable effects.
из мсдн
// crt_strtok.c
/* In this program, a loop uses strtok
* to print all the tokens (separated by commas
* or blanks) in the string named "string".
*/
#include <string.h>
#include <stdio.h>
char string[] = "A string\tof ,,tokens\nand some more tokens";
char seps[] = " ,\t\n";
char *token;
int main( void )
{
printf( "Tokens:\n" );
/* Establish string and get the first token: */
token = strtok( string, seps );
while( token != NULL )
{
/* While there are tokens in "string" */
printf( " %s\n", token );
/* Get next token: */
token = strtok( NULL, seps );
}
}
Output
Tokens:
A
string
of
tokens
and
some
more
tokens
