Write A C++ Program For Object Assignment.

#include <iostream.h> 
 #include<conio.h> 
 class MyClass 
 { 
         int a, b; 
         public: 
                    void setAB(int i, int j) { a = i, b = j; } 
                    void display() 
                 { 
                    cout << "\n a is " <<a << "\n"; 
                    cout << "\n b is " << b <<"\n"; 
             } 
 }; 
     void main() 
 { 
      clrscr(); 
      MyClass ob1, ob2; 
      ob1.setAB(10, 20); 
      ob2.setAB(0, 0); 
      cout << "ob1 before assignment"; 
      ob1.display(); 
      cout << "ob2 before assignment"; 
      ob2.display(); 
      ob2 = ob1;                                                                           
      cout << "ob1 after assignment"; 
      ob1.display(); 
      cout << "ob2 after assignment"; 
      ob2.display(); 
      ob1.setAB(-1, -1); 
      cout << "ob1 after changing ob1 :"; 
      ob1.display(); 
      cout << "ob2 after changing ob1 :"; 
      ob2.display(); 
      getch(); 
 }