the concept of Multiple Indirection in C

#include 
#include 
void main() {
  int i =100;
  int **pt1;
  int *pt2;
  clrscr();
  pt2 = &i;
  pt1 = &pt2;
  printf("The value of **pt1 = %d \n The value of *pt2 = %d", **pt1, *pt2);
  getch();
}