Go4Expert - strtok query

Go4Expert (http://www.go4expert.com/)

- C (http://www.go4expert.com/forumdisplay.php?f=20)

- - strtok query (http://www.go4expert.com/showthread.php?t=4433)

Hi,
When strtok is used and it doesn't find the delimiter when strtok is used the FIRST time, it should return a null. But this doesn't seems to be the behavior. Pl refer to this code -

Code:

char*  szInputStr = "string to split up";

char *copy = NULL;



/* Copy the szInputStr to Copy */



len = strlen(szInputStr);

copy = (char *)malloc(len+1);

strcpy(copy, szInputStr);



/* Do strtok */

result = strtok(copy, "~");

if(result == NULL)

printf("result is NULL \n");

else

printf("result is NOT null \n");

The above code should return NULL - right? Please confirm.

Actually the value is same as the original string - "string to split up". The above code prints -
"result is NOT null"

Re: strtok query

No, it should not. Strtok returns a NULL when no more tokens are found. On the first call it found "string to split up". The return will be a pointer to that token, which happens to be the entire input string.

Do yourself a favor: read the documentations for the things you use.

Do us a favor: learn to use the code tags like a big boy. Quit forcing the task on Shabbir.