strtok intricacies

[Unregistered]

Does anybody know how strtok works?

What mean to say is, it is in the string.h library but all that is written there is

char * strtok(char *str, const char *sep)

Does anybody actually know the code for strtok, i.e. how it actually breaks strings into seperate parts?

[Prelude]

This should be in the C board

#include <string.h>

char *strtok ( char *a, const char *b )
{
  static char *save = "";
  char *start, *end;
  start = a ? a : save;
  start += strspn ( start, b );
  if ( *start == '\0' ) {
    save = "";
    return NULL;
  }
  end = start + strcspn ( start, b );
  if ( *end != '\0' )
    *end++ = '\0';
  save = end;
  return start;
}

-Prelude