Difference Between strtok() and strtok_r()
Let us see the differences between strtok() and strtok_r() functions in a tabular form as shown below:
|
S.No. |
strtok() |
strtok_r() |
|---|---|---|
|
1. |
It is used to break string str into a series of tokens. | It is used to decode a string into a pattern for tokens. |
|
2. |
The syntax is as follows: char *strtok(char *str, const char *delim) |
Its syntax is as follows: char *strtok_r(char *string, const char *limiter, char **context); |
|
3. |
It uses the delimiter to proceed. | It is a re-entered variant of strtok(). |
|
4. |
It takes two parameters. | It takes three parameters. |
|
5. |
It returns a pointer to the first token found in the string. | It returns a pointer to the first token found in the string. |
| 6. | It is not thread-safe. | It is thread-safe. |
strtok() and strtok_r() functions in C with examples
C provides two functions strtok() and strtok_r() for splitting a string by some delimiter. Splitting a string is a very common task. For example, we have a comma-separated list of items from a file and we want individual items in an array.