C++ programming

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发表于 2013-7-3 09:00 PM |只看该作者 |倒序浏览

本帖最后由 nbaball 于 2013-7-3 09:02 PM 编辑

小弟在做着 c++ assignment, 可是现在 stuck 着了，希望有高手可以指教指教

#include<iostream>
#include<string>
#include<iomanip>
using namespace std;
//Class Person
class Person{
private:
string firstName; //variable to store the first name
string lastName; //variable to store the last name
public:
Person(string first = "", string last = "");
void displayName() const;
void setName(string first, string last);
string getFirstName() const;
string getLastName() const;
};
void Person::displayName() const{
cout << "First Name : " << firstName << endl << "Last Name : " << lastName << endl;
}
void Person::setName(string first, string last){
firstName = first;
lastName = last;
}
string Person::getFirstName() const{
return firstName;
}
string Person::getLastName() const{
return lastName;
}
//constructor
Person::Person(string first, string last){
firstName = first;
lastName = last;
}
//Class Date
class Date{
private:
int dMonth; //variable to store the month
int dDay; //variable to store the day
int dYear; //variable to store the year
public:
void setDate(int month, int day, int year);
int getDay() const;
int getMonth() const;
int getYear() const;
void printDate() const;
Date(int month = 1, int day = 1, int year = 1900);
};
void Date::setDate(int month, int day, int year){
dMonth = month;
dDay = day;
dYear = year;
}
int Date::getDay() const{return dDay;}
int Date::getMonth() const{return dMonth;}
int Date::getYear() const{return dYear;}
void Date::printDate() const{
cout << dMonth << "-" << dDay << "-" << dYear;
}
Date::Date(int month, int day, int year){
dMonth = month;
dDay = day;
dYear = year;
}
//Class Doctor
class Doctor : public Person{
private:
string speciality,position;
public:
Doctor(string speciality ="",string position = "");
string getSpeciality();
string getPosition();
void setSpeciality(string newSpeciality);
void setPosition(string newPosition);
void createDoctor();
void displayDoctorDetail();
};
string Doctor::getSpeciality(){return speciality;}
string Doctor::getPosition(){return position;}
void Doctor::setSpeciality(string newSpeciality){
speciality = newSpeciality;}
void Doctor::setPosition(string newPosition){
position = newPosition;}
void Doctor::createDoctor(){
string firstName, lastName;
cout << "Please enter the name of the Doctor" << endl;
cout << "First Name : ";
cin >> firstName;
cout << endl;
cout << "Last Name : ";
getline(cin,lastName);
cout << endl;
setName(firstName, lastName);
cout << "Speciality : ";
cin >> speciality;
cout << endl << "Position : ";
cin >> position;
}
void Doctor::displayDoctorDetail(){
displayName();
cout << "Speciality : " << getSpeciality() << endl;
cout << "Postion : " << getPosition() << endl;
}
//Class Patient
class Patient:public Person{
private:
string patientID;
int patientAge;
public:
Date dob;
Date admitted;
Date discharged;
int getAge();
string getID();
void setAge(int newAge);
void setID(string newID);
void newPatient();
void displayPatient();
};
int Patient::getAge(){return patientAge;}
string Patient::getID(){return patientID;}
void Patient::setAge(int newAge){
patientAge = newAge;}
void Patient::setID(string newID){
patientID = newID;}
void Patient::newPatient(){
string firstName,lastName;
int dobDay,dobMonth,dobYear,admittedDay,admittedMonth,admittedYear,dischargedDay,dischargedMonth,dischargedYear;
cout << "Please enter the Patient Name" << endl;
cout << "First Name : ";
cin >> firstName;
cout << endl << "Last Name : ";
getline(cin,lastName);
setName(firstName,lastName);
cout << endl << "Please enter the Patient ID" << endl;
cout << "Patient ID : ";
cin >> patientID;
setID(patientID);
cout << endl << "Please enter the Patient Age" << endl;
cout << "Patient Age : ";
cin >> patientAge;
setAge(patientAge);
cout << "Please enter date of birthday of the patient" << endl;
cout << "Day : ";
cin >> dobDay;
cout << endl << "Month : ";
cin >> dobMonth;
cout << endl << "Year : ";
cin >> dobYear;
dob.setDate(dobDay,dobMonth,dobYear);
cout << "Please enter the admitted date of the patient" << endl;
cout << "Day : ";
cin >> admittedDay;
cout << endl << "Month : ";
cin >> admittedMonth;
cout << endl << "Year : ";
cin >> admittedYear;
admitted.setDate(admittedDay,admittedMonth,admittedYear);
cout << "Please enter the discharged date of the patient" << endl;
cout << "Day : ";
cin >> dischargedDay;
cout << endl << "Month : ";
cin >> dischargedMonth;
cout << endl << "Year : ";
cin >> dischargedYear;
discharged.setDate(dischargedDay,dischargedMonth,dischargedYear);
}
void Patient::displayPatient(){
displayName();
cout << "Patient Age : " << getAge() << endl;
cout << "Patient ID : " << getID() << endl;
dob.printDate();
admitted.printDate();
discharged.printDate();
}
class Bill{
private:
float charges;
float medicineFees;
float doctorFees;
float roomCharge;
public:
Bill(float charges = 0, float medicineFees = 0, float doctorFees = 0, float roomCharge = 0);
Patient p;
Doctor d;
float getCharges();
float getMedicineFees();
float getDoctorFees();
float getroomCharge();
void setCharges(float newCharge);
void setMedicineFees(float newMedicineFees);
void setDoctorFees(float newDoctorFees);
void setRoomCharge(float newRoomCharge);
void generateBill();
void displayBill();
};
Bill::Bill(float newCharges,float newMedicineFees,float newDoctorFees,float newRoomCharge){
charges = newCharges;
medicineFees = newMedicineFees;
doctorFees = newDoctorFees;
roomCharge = newRoomCharge;}
float Bill::getCharges(){return charges;}
float Bill::getMedicineFees(){return medicineFees;}
float Bill::getDoctorFees(){return doctorFees;}
float Bill::getroomCharge(){return roomCharge;}
void Bill::setCharges(float newCharge){
charges = newCharge;}
void Bill::setMedicineFees(float newMedicineFees){
medicineFees = newMedicineFees;}
void Bill::setDoctorFees(float newDoctorFees){
doctorFees = newDoctorFees;}
void Bill::setRoomCharge(float newRoomCharge){
roomCharge = newRoomCharge;}
void Bill::generateBill(){
p.newPatient();
d.createDoctor();
}
void printMenu(){
cout << "Please select which option you want to select\n"
<< "1. Create Bill\n";
}
int main(){
Bill b;
int option;
do{
printMenu();
cin >> option;
switch(option)
{
case 1:
b.generateBill();
break;
}
}while(option != 5);
cin.get();
cin.ignore(1,'\n');
return 0;
}

复制代码

我不可以用 Doctor 和 Patient class 来做一个variable,请问是哪里出问题了？

Output Error

In function `Bill::Bill(float, float, float, float)':
undefined reference to `Doctor: