ALGORITHM

1. Start the process
2. Invoke the class with pointer
3. Assign ptr<-&obj 4. Call the ptr->getdata()
a. Get the roll no and name of the student
5. Call the ptr->display()
a. Print the roll no and name
6. Stop the process

PROGRAM

#include
	#include

	class  base 
	{
		private: int x;
			float y;
		public : virtual void getdata( );
			virtual void display( );
	};
	class dev : public base
	{
		private:  int roll;
			 char name[20];
		public : void getdata( );
			void  display( );
	};	
	void base :: getdata( )  {  }
	void base :: display( )   {  }
			
	void dev :: getdata( )
	{
		cout<<” Enter Roll of  the Student “;
		cin>> roll;
		cout<<” Enter name of  the student”;
		cin>>name;
        }
	void dev :: display( )
	{
		cout<<”Name is :”< getdata( );
		ptr -> display( );
		getch( );
	}

OUTPUT

Enter the roll no of the student: 111
Enter the name of the student : Kapil Dev

Name is : Kapil Dev
Roll no is : 111

The post C++ program to implement Pure Virtual Functions first appeared on Student Projects.

ALGORITHM

1. Start the process
2. Invoke the class with pointer
3. Assign ptr[0] <- &objb; i. Assign ptr[1] <- &objc; 4. Ptr(0)points the getdata() a. Get the values of x and y 5. Ptr(1) points to the getdata() a. Get the roll no and name of the student 6. Ptr(0) and ptr(1) are points to the display() a. Print the values 7. Stop the process PROGRAM

#include
#include
			
	class base
	{
		private: int x;
			float y;
		public:  
			virtual void getdata( );
			virtual void display( );
	};
	class devb: public base
	{
		private: int roll;
			char name[20];
		public:  virtual void getdata( );
			virtual void display( );
	};
	class devc : public  base
	{
		private: float height;
			float weight;
		public : virtual void getdata( );
			 virtual void display( );
	}:
	void base :: getdata( )
	{
		cout<<” Enter any Integer”;
		cin>>x;
		cout<<”Enter a real no”;
		cin>>y;
	}
	void base ::display( )
	{
		cout<<”The no X=”<>roll;
		cout<<”Enter Name of Student :”;
		cin>>name;
	}
	void devc :: getdata( )
	{
		cout<<”Enter height and weight”;
		cin>>height>>weight;
	}
	void devc :: display( )
	{
		cout<<”Height :”<getdata( );
		ptr[1] -> getdata( );
		ptr[1] -> display( );
		ptr[1] -> display( );
		getch ( );
  	}

OUTPUT

Enter the Roll of the Student: 101
Enter Name of Student : salah
height and weight 170 72

Roll of the Student is:101
Name of the Student is:salah
Height :170
Weight :72

The post C++ program to illestrate virtual functions first appeared on Student Projects.