Answer to Question #190750 in C++ for yuuhij

Question

 Start with the publication, book and tape classes. Add base class sales that holds an array of three floats so that it can record the dollar sales of a particular publication for the last three months. Include a getdata() function to get three sale amount from the user and a putdata() function to display the sales figure. Alter the book and tape classes, so they are derived from both publication and sales. An object of book or tape should should input and output ans sales data along with other data. Write a main function to create a book and tape object and exercise their input/output capabilities. 

Answer 1

#include <iostream>
#include <string>
#include <conio.h>
using namespace std;
class publication
{
private:
 string title;
 float price;
public:
 void getdata(void)
 {
  string t;
  float p;
  cout << "Enter title of publication: ";
  cin >> t;
  cout << "Enter price of publication: ";
  cin >> p;
  title = t;
  price = p;
 }
 void putdata(void)
 {
  cout << "Publication title: " << title << endl;
  cout << "Publication price: " << price << endl;
 }
};
class sales
{
private:
 float s1, s2, s3;
public:
 void getdata(void)
 {
  cout << "Enter month 1 sale: $";
  cin >> s1;
  cout << "Enter month 2 sale: $";
  cin >> s2;
  cout << "Enter month 3 sale: $";
  cin >> s3;
 }
 void putdata(void)
 {
  cout << "Month 1 sale: $" << s1 << endl;
  cout << "Month 2 sale: $" << s2 << endl;
  cout << "Month 3 sale: $" << s3 << endl;
 }
};
class book :public publication,public sales
{
private:
 int pagecount;
public:
 void getdata(void)
 {
  publication::getdata();
  sales::getdata();
  cout << "Enter Book Page Count: ";
  cin >> pagecount;
 }
 void putdata(void)
 {
  publication::putdata();
  sales::putdata();
  cout << "Book page count: " << pagecount << endl;
 }
};
class tape :public publication,public sales
{
private:
 float ptime;
public:
 void getdata(void)
 {
  publication::getdata();
  sales::getdata();
  cout << "Enter tap's playing time: ";
  cin >> ptime;
 }
 void putdata(void)
 {
  publication::putdata();
  sales::putdata();
  cout << "Tap's playing time: " << ptime << endl;
 }
};
void main(void)
{
 book b;
 tape t;
 b.getdata();
 t.getdata();
 b.putdata();
 t.putdata();
 _getch();
}