If a variable is a pointer to a structure, then which of the following operator

If a variable is a pointer to a structure, then which of the following operator is used to access data members of the structure through the pointer variable?

2) What will be the output of the following C code?

 #include <stdio.h>
 int main()
 {
    int i = 10;
    void *p = &i;
    printf("%d\n", (int)*p);
    return 0;
 }

3) Which is an indirection operator among the following?

4) How many bytes are occupied by near, far and huge pointers (DOS)?

5) Which of the following does not initialize ptr to null (assuming variable declaration of a as int a=0;)?