strtok()

  #include <string.h>

  

  char *strtok(char *p, const char *q);

  

strtok() breaks the string p into tokens which are separated by at least one character appearing in q. The first time, call strtok() using the original string as the first parameter. Afterwards, pass NULL as first parameter: strtok() will continue at the position it stopped the previous time. strtok() saves the string p if it is not NULL.

A pointer to the token found, or NULL, if no token was found.

strchr(),

strcspn(),

strpbrk().

strrchr(),

strspn(), and

strstr()