CODEWITHSUNDEEP
cstringstrtok
EgerStu
EgerStu

Reputation: 25

Storing final token of a string using strtok()?

Say I have a string called str of the format 

"token1, token2, token3"

and I want to store each token into its own char array like so

char* tok1 = strtok(str, ", ");
char* tok2 = strtok(str, ", ");
char* tok3 = strtok(str, "\0"); //this line is incorrect

But I get an error on the third token because strtok() expects a non-null input. Since strtok() requires two parameters (a string and a delimiter), how would I retrieve that final token?

Upvotes: 0

Views: 560

Answers (1)

DYZ
DYZ

Reputation: 57033

If you are parsing the same string, the value of the first parameter must be NULL for all subsequent calls:

char* tok1 = strtok(str, ", ");
char* tok2 = strtok(NULL, ", ");
char* tok3 = strtok(NULL, "");

On the first call to strtok() the string to be parsed should be specified in str. In each subsequent call that should parse the same string, str should be NULL.

Upvotes: 5

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