VIRTUAL FUNCTION USING C++



/*BOOK DETAILS USING VIRTUAL FUNCTION */

PROGRAM:

#include<iostream.h>
#include<conio.h>
class author
{
 char aname[20],acon[20];
 long int phn;
public:
 virtual void getdata();
 virtual void display();
}a[10];

class book:public author
{
 char bname[20],pub[20];
 char date[10],ed[10];
public:
 void getdata();
 void display();
}b[10];
void author::getdata()
{
 cout<<"\n\t\t AUTHOR DETAILS";
 cout<<"\n Enter the author name:";
 cin>>aname;
 cout<<"\n enter the author country:";
 cin>>acon;
 cout<<"\n Enter the author phone no:";
 cin>>phn;
}
void author::display()
{
 cout<<"\n Author name   :"<<aname;
 cout<<"\n Author country:"<<acon;
 cout<<"\n Author phoneno:"<<phn;
}
void book::getdata()
{
 cout<<"\n\t\t BOOK DETAILS ";
 cout<<"\n Enter the book name:";
 cin>>bname;
 cout<<"\n Enter the book publish date:";
 cin>>date;
 cout<<"\n Enter the edition:";
 cin>>ed;
 cout<<"\n Enter the publisher name:";
 cin>>pub;
}
void book::display()
{
 cout<<"\n Book name:"<<bname;
 cout<<"\n Publish date:"<<date;
 cout<<"\n edition:"<<ed;
 cout<<"\n Publisher name:"<<pub;
}
void main()
{
 int n,i;
 author *ab[10],*bb[10];
 clrscr();
 cout<<"\n\t\t BOOK DETAILS USING VIRTUAL FUNCTION ";
 cout<<"\n Enter the no of books:";
 cin>>n;
 for(i=0;i<n;i++)
 {
 cout<<i+1<<"Book";
 ab[i]=&a[i];
 bb[i]=&b[i];
 ab[i]->getdata();
 bb[i]->getdata();
 }
 cout<<i+1<<"Details";
 ab[i]=&a[i];
 bb[i]=&b[i];
 ab[i]->display();
 bb[i]->display();
getch();
}

 


OUTPUT:


                 BOOK DETAILS USING VIRTUAL FUNCTION

 Enter the no of books:2
1Book
                 AUTHOR DETAILS
 Enter the author name: Michele E. Davis

 enter the author country:usa

 Enter the author phone no:12456

                 BOOK DETAILS
 Enter the book name:Learning PHP5 and MySQL

 Enter the book publish date:2000

 Enter the edition:3th

 Enter the publisher name:O’Reilly
2Book
                 AUTHOR DETAILS
 Enter the author name:kamthane

 Enter the author country:kanada

 Enter the author phone no:63689

                 BOOK DETAILS
 Enter the book name:c++

 Enter the book publish date:1890

 Enter the edition:4th

 Enter the publisher name:mcgrouhill



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