Check Answer.

C++ Program to Define a Class BOOK and accessing member function using its object

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

class BOOK
{
 int BOOKNO;
 char BOOKTITLE[20];
 float PRICE;
 void TOTAL_COST(int N)
 {
  float tcost;
  tcost=PRICE*N;
  cout<<tcost;
 }
public:
 void INPUT()
 {
  cout<<"Enter Book Number ";
  cin>>BOOKNO;
  cout<<"Enter Book Title ";
  gets(BOOKTITLE);
  cout<<"Enter price per copy ";
  cin>>PRICE;
 }
 
 void PURCHASE()
 {
  int n;
  cout<<"Enter number of copies to purchase ";
  cin>>n;
  cout<<"Total cost is ";
  TOTAL_COST(n);
 }
};
 
int main()
{
 BOOK obj;
 obj.INPUT();
 obj.PURCHASE();
 getch();
 return 0;
}