2 .please explain the concept

#1
  1. why * is used in defining the function mystrtok ?
  2. what is the meaning of char* s?
  3. please send the code of this video
#2

hello @divyam_13
r u familar with pointers?
i am asking this because all ur doubt is related to pointers.
if not then please watch pointer videos first .
because u will get the concept of this video only when u will be familar with pointer