< Constructor

Constructor

Syntax of it is

class abc{

           abc();

                    };

abc::abc{

               }


};

 Four main rules of Constructor

     
The constructor's and class's name must be same.
It is only used for initialization.
No keyword will used before constructor
There is no use to call it.
     

     
   Basic Program

   INPUT

 

    #include <iostream>
    #include<conio.h>
    class abc{
    private:
    int a,b,c;
    public:
    abc();
    void display();
    };
    abc::abc{
    a=10;
    b=20;
    c=30;
    }
    void abc::display{
    cout<<a<<endl<<b<<endl<<c;
    }
    main() {
    abc a1;
    a1.display();
    
    getch();
    }






 

 

     OUTPUT