#include<iostream.h>
 #include<conio.h>

 /*************************************************************************///------------------------------  test  ---------------------------------///*************************************************************************/class test
    {
       private:
        int data;

       public:
        test() { data=2; }
               // this is an error by removing constructor.//        void showdata(){cout<<"data="<<data<<endl;}// it will give warning but access data.//        void showdata()const;// it will work successfully.//        void setdata()const { data=5; }// it will generate an error.//        void setdata() { data=5; }// it will give warning but modify the object.void test::showdata()const  { cout<<" data = "<<data<<endl; }
       };

 main( )
    {
       clrscr();

       const test obj;

       obj.showdata();
      //obj.setdata();

       getch();
       return 0;
    }