page10_17.cpp

C++ interview materials. Very helpful for interview. Including Answer.

/*
NIIT 《C++ & CGI PROGRAMMING &SCRRIPTING》 Skill Base
教材P10.17
审核：周永 [e-mail]	23:36 2004-10-18
测试环境：Microsoft Windowsn 2000(VC++)；Red Hat Linux 7.3；Red Hat Linux 9.0
*/

#include <iostream>
#include <string>
using namespace std;

class Person
{
protected:
	string name;
	string dateOfBirth;
	string city;
	string mobileNo;
	string phoneNo;
public:
	virtual void accept()
	{
		cout << endl << "Name: ";
		getline(cin,name);
		cout << endl << "Date of Birth: ";
		cin >> dateOfBirth;
		cin.ignore();
		cout << endl << "City: ";
		getline(cin,city);
		cout << endl << "Mobile phone number: ";
		cin >> mobileNo;
		cin.ignore();
		cout << endl << "Residence phone number: ";
		cin >> phoneNo;
		cin.ignore();
     }
	virtual void display()	
	{
		cout << endl << "Name             : " << name;
		cout << endl << "Date of birth    : " << dateOfBirth;
		cout << endl << "City             : " << city;
		cout << endl << "Mobile number    : " << mobileNo;
		cout << endl << "Residence number : " << phoneNo;
      }
};


class Customer : public Person
{
private:
     string billingAddress;
     float amountOutstanding;
public:
	virtual void accept()
	{
		cout << endl << endl << "ENTER CUSTOMER'S DETAILS";
		Person::accept();
		cout << endl << "Customer's billing address: ";
		getline(cin, billingAddress);
		cout << endl << "Amount due: ";
		cin >> amountOutstanding;
	}

	virtual void display()
	{
		cout << endl << endl << "CUSTOMER'S DETAILS ";
		Person::display();
		cout << endl << "Billing address   : " << billingAddress;
		cout << endl << "Outstanding amount: " << amountOutstanding << endl;
	}
};


class Dealer : public Person
{
private:
     string shopAddress;
     int numSold;
public:
	virtual void accept()
	{
           cout << endl << endl << "ENTER DEALER'S DETAILS";
           Person::accept();
           cout << endl << "Shop address      : ";
           getline(cin, shopAddress);
           cout << endl << "Number Sold       : ";
           cin >> numSold;
	}
	virtual void display()
	{
           cout << endl << endl << "DEALER'S DETAILS ";
           Person::display();
           cout << endl << "Shop address      : " 
                << shopAddress;
           cout << endl << "Number sold       : " 
                << numSold << endl;
	}
};


int main()
{
Person *personptr[100];
int i;
int choice = 0, ctr  =  0;
while(choice != 4 && ctr < 100)
{
cout << endl << "CUSTOMER MENU" << endl;
cout << "1. Accept the details of a customer" << endl;
cout << "2. Accept the details of a dealer" << endl;
cout << "3. Display the details " << endl;
cout << "4. Quit the application" << endl;
cout << "Enter choice (1 - 4):  ";
cin >> choice;
cin.ignore();
switch(choice)
{
case 1:
personptr[ctr] = new Customer;
personptr[ctr]->accept();
ctr++;
break;
case 2:
personptr[ctr] = new Dealer;
personptr[ctr]->accept();
ctr++;
break;
case 3:
for(i = 0; i < ctr; i++)
personptr[i]->display();
break;
case 4:
continue;
default:
cout << "Invalid option!Please enter 1 - 4 only"    << endl;
 }

}
  return 0;
}