How does strtok() split the string into tokens in C?

Question

Please explain to me the working of strtok() function. The manual says it breaks the string into tokens. I am unable to understand from the manual what it actua

Answer 1

strtok maintains a static, internal reference pointing to the next available token in the string; if you pass it a NULL pointer, it will work from that internal reference.

This is the reason strtok isn't re-entrant; as soon as you pass it a new pointer, that old internal reference gets clobbered.