Write A C++ Program To Incrementing And Decrementing An Object Pointer

#include<iostream.h> 
 #include<conio.h> 
 class MyClass 
 { 
                   int x; 
      public: 
               void setX(int val) { x = val; } 
               void display(){ cout << x << "\n"; } 
 }; 
     void main() 
 { 
             clrscr(); 
             MyClass ob[2], *p; 
             ob[0].setX(10); 
             ob[1].setX(20); 
             p = &ob[0]; 
             p->display(); 
             p++; 
             p->display(); 
             p--; 
             p->display(); 
             getch(); 
 } 
 Output: 
 10 
 20 
 10