How to deal with pointers hidden deep in C structures?

Question

C++ / C#

There is a struct which has a struct which has a struct ... which has a struct which has a pointer to an unsigned char array. I create a pointer to this structure. How to pass, for example, to unsigned char* adress the address of the first element of this array? Will the value in adress change to the address of the next array element if I write *adress++?
For example:

struct struct1{
int a;
int b;
struct2 *st;
} 

struct struct2{
int a;
int b;
struct3 *st;
} 

struct struct3{
int a;
int b;
struct4 *st;
} 

struct struct4{
int a;
unsigned char* mas;
}

and so I will create unsigned char* adress and struct1* st. How can I pass the address of mas to adress? And, taking this opportunity, how do I get the value that is at the address in mas?