double pointer vs pointer to array, incompatible pointer type

Question

Having this:

#define _DEFAULT_SOURCE 1
#include 
#include 

int main(){
    char *token, org[] = "Cats,Dogs,Mice,,,Dwarves         


        

Answer 1

Address of the array references the place where the array starts, it has only the different type - pointer to the array. It is not pointer to pointer.

    char *token, org[] = "Cats,Dogs,Mice,,,Dwarves,Elves:High,Elves:Wood";
    char *pointer = org;
    while((token=strsep(&pointer,",")))
    /* ... */

You cant cast reference to array to double pointer.

restrict it a quite advanced topic. It promises the compiler that if the object referenced by pointer is modified, the access to this object can be only done by this pointer. It helps the compiler in the code optimisations

Generally speaking I would not expect you to use this qualifier before you get proficient in the C language.