09p1.cpp

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

/*
NIIT 《C++ & CGI PROGRAMMING &SCRRIPTING》 Skill Base
教材P9.10	9.P.1
审核：周永 [e-mail]	23:34 2004-10-18
测试环境：Microsoft Windowsn 2000(VC++)；Red Hat Linux 7.3；Red Hat Linux 9.0
*/

//运行程序的时候，有意识的直接按回车键，有些项不输入
#include <iostream>
using namespace std;

class Customer
{
private:
	char mobileNo[11];
	char name[25];
	char dateOfBirth[11];
	char billingAddress[51];
	char city[25];
	char phoneNo[11];
	float amountOutstanding;
void validate();
public:
Customer();
~Customer();
void print();
void get();
};

Customer::Customer()
{
	*mobileNo = '\0';
	*name = '\0';
	*dateOfBirth = '\0';
	*billingAddress = '\0';
	*city = '\0';
	*phoneNo = '\0';
	amountOutstanding = 0.0f;
}

Customer::~Customer() 
{
	*mobileNo = '\0';
	*name = '\0';
	*dateOfBirth = '\0';
	*billingAddress = '\0';
	*city = '\0';
	*phoneNo = '\0';
	amountOutstanding = 0.0f;
}

void Customer::print()
{
	cout << endl << "Mobile phone number: ";
	cout << mobileNo << endl;
	cout << "Name: ";
	cout << name << endl;
	cout << "Date of Birth: ";
	cout << dateOfBirth << endl;	
	cout <<"Customer's billing address: ";
	cout << billingAddress << endl;
	cout << "City: ";
	cout << city << endl;
	cout << "Residence phone number: ";
	cout << phoneNo << endl;
	cout << "Amount due: ";
	cout << amountOutstanding << endl;
}

void Customer::get()
{
	cout << "Mobile phone number: ";
	cin >> mobileNo;
	cin.ignore();
	cout << endl << "Name: ";
	cin.getline(name, 25);
	cout << endl << "Date of Birth: ";
	cin >> dateOfBirth;
	cin.ignore();
	cout << endl << "Customer's billing address: ";
	cin.getline(billingAddress, 51);
	cout << endl << "City: ";
	cin.getline(city, 25);
	cout << endl << "Residence phone number: ";
	cin >> phoneNo;
	cout << endl << "Amount due: ";
	cin >> amountOutstanding;
	validate();
}

void Customer::validate()
{
if(*mobileNo == '\0')
throw "The mobile number cannot be left blank";

if(*name == '\0')
throw "The name cannot be left blank";

if(*dateOfBirth == '\0')
throw "The date of birth cannot be left blank";

if(*billingAddress == '\0')
throw "The billing address cannot be left blank";

if(*city == '\0')
throw "The name of the city cannot be left blank";

if(*phoneNo == '\0')
throw "The phone number cannot be left blank";

if(amountOutstanding < 0)
throw "The outstanding amount cannot be less than zero";
}

int main()
{
  Customer object;
  try
  {
	object.get();
        object.print();
   }
   catch(char *message)
   {
      cout << "Exception: " << message << endl;
   }
   catch(...)
   {
     cout <<"Unknown Exception!" <<endl;
   }
	return 0;
}