COS3711
Assignment 1 2026
Unique number:
Due date: 2026
QUESTION 1
#include <QCoreApplication>
#include <QDate>
#include <QList>
#include <QTextStream>
// ---------------------------
// Vehicle (base class)
// ---------------------------
class Vehicle : public QObject
{
public:
explicit Vehicle(QObject* parent = nullptr)
: QObject(parent)
, m_model(defaultModel())
, m_year(defaultYear())
{}
Vehicle(const QString& model, int year, QObject* parent = nullptr)
: QObject(parent)
{
setModel(model);
setYear(year);
DISCLAIMER & TERMS OF USE
Educational Aid: These study notes are intended to be used as educational resources and should not be seen
as a replacement for individual research, critical analysis, or professional consultation. Students are encouraged
to perform their own research and seek advice from their instructors or academic advisors for specific
assignment guidelines.
Personal Responsibility: While every effort has been made to ensure the accuracy and reliability of the
information in these study notes, the seller does not guarantee the completeness or correctness of all content.
The buyer is responsible for verifying the accuracy of the information and exercising their own judgment when
applying it to their assignments.
Academic Integrity: It is essential for students to maintain academic integrity and follow their institution's
policies regarding plagiarism, citation, and referencing. These study notes should be used as learning tools and
sources of inspiration. Any direct reproduction of the content without proper citation and acknowledgment may
be considered academic misconduct.
Limited Liability: The seller shall not be liable for any direct or indirect damages, losses, or consequences
arising from the use of these notes. This includes, but is not limited to, poor academic performance, penalties, or
any other negative consequences resulting from the application or misuse of the information provided.
,QUESTION 1
#include <QCoreApplication>
#include <QDate>
#include <QList>
#include <QTextStream>
// ---------------------------
// Vehicle (base class)
// ---------------------------
class Vehicle : public QObject
{
public:
explicit Vehicle(QObject* parent = nullptr)
: QObject(parent)
, m_model(defaultModel())
, m_year(defaultYear())
{}
Vehicle(const QString& model, int year, QObject* parent = nullptr)
: QObject(parent)
{
setModel(model);
setYear(year);
}
virtual ~Vehicle() = default;
// Getters
QString model() const { return m_model; }
int year() const { return m_year; }
// Setters (validated)
void setModel(const QString& model)
{
const QString trimmed = model.trimmed();
m_model = trimmed.isEmpty() ? defaultModel() : trimmed;
}
void setYear(int year)
{
m_year = isReasonableYear(year) ? year : defaultYear();
}
// Output function
virtual QString details() const
{
return QString("Type=Vehicle, Model=%1,
Year=%2").arg(m_model).arg(m_year);
}
protected:
static QString defaultModel() { return "Unknown Model"; }
static int defaultYear()
{
return QDate::currentDate().year();
}
static bool isReasonableYear(int y)
, {
const int current = QDate::currentDate().year();
return (y >= 1886 && y <= current + 1);
}
private:
QString m_model;
int m_year;
};
// ---------------------------
// PassengerVehicle
// ---------------------------
class PassengerVehicle : public Vehicle
{
public:
explicit PassengerVehicle(QObject* parent = nullptr)
: Vehicle(parent)
, m_passengers(defaultPassengers())
{}
PassengerVehicle(const QString& model, int year, int passengers,
QObject* parent = nullptr)
: Vehicle(model, year, parent)
{
setPassengerCount(passengers);
}
int passengerCount() const { return m_passengers; }
void setPassengerCount(int count)
{
m_passengers = (count >= 1 && count <= 15) ? count :
defaultPassengers();
}
QString details() const override
{
return QString("Type=PassengerVehicle, Model=%1, Year=%2,
Passengers=%3")
.arg(model())
.arg(year())
.arg(m_passengers);
}
private:
static int defaultPassengers() { return 4; }
int m_passengers;
};
// ---------------------------
// TransportVehicle
// ---------------------------
class TransportVehicle : public Vehicle
{
public:
explicit TransportVehicle(QObject* parent = nullptr)
: Vehicle(parent)
, m_capacityKg(defaultCapacityKg())
{}
Assignment 1 2026
Unique number:
Due date: 2026
QUESTION 1
#include <QCoreApplication>
#include <QDate>
#include <QList>
#include <QTextStream>
// ---------------------------
// Vehicle (base class)
// ---------------------------
class Vehicle : public QObject
{
public:
explicit Vehicle(QObject* parent = nullptr)
: QObject(parent)
, m_model(defaultModel())
, m_year(defaultYear())
{}
Vehicle(const QString& model, int year, QObject* parent = nullptr)
: QObject(parent)
{
setModel(model);
setYear(year);
DISCLAIMER & TERMS OF USE
Educational Aid: These study notes are intended to be used as educational resources and should not be seen
as a replacement for individual research, critical analysis, or professional consultation. Students are encouraged
to perform their own research and seek advice from their instructors or academic advisors for specific
assignment guidelines.
Personal Responsibility: While every effort has been made to ensure the accuracy and reliability of the
information in these study notes, the seller does not guarantee the completeness or correctness of all content.
The buyer is responsible for verifying the accuracy of the information and exercising their own judgment when
applying it to their assignments.
Academic Integrity: It is essential for students to maintain academic integrity and follow their institution's
policies regarding plagiarism, citation, and referencing. These study notes should be used as learning tools and
sources of inspiration. Any direct reproduction of the content without proper citation and acknowledgment may
be considered academic misconduct.
Limited Liability: The seller shall not be liable for any direct or indirect damages, losses, or consequences
arising from the use of these notes. This includes, but is not limited to, poor academic performance, penalties, or
any other negative consequences resulting from the application or misuse of the information provided.
,QUESTION 1
#include <QCoreApplication>
#include <QDate>
#include <QList>
#include <QTextStream>
// ---------------------------
// Vehicle (base class)
// ---------------------------
class Vehicle : public QObject
{
public:
explicit Vehicle(QObject* parent = nullptr)
: QObject(parent)
, m_model(defaultModel())
, m_year(defaultYear())
{}
Vehicle(const QString& model, int year, QObject* parent = nullptr)
: QObject(parent)
{
setModel(model);
setYear(year);
}
virtual ~Vehicle() = default;
// Getters
QString model() const { return m_model; }
int year() const { return m_year; }
// Setters (validated)
void setModel(const QString& model)
{
const QString trimmed = model.trimmed();
m_model = trimmed.isEmpty() ? defaultModel() : trimmed;
}
void setYear(int year)
{
m_year = isReasonableYear(year) ? year : defaultYear();
}
// Output function
virtual QString details() const
{
return QString("Type=Vehicle, Model=%1,
Year=%2").arg(m_model).arg(m_year);
}
protected:
static QString defaultModel() { return "Unknown Model"; }
static int defaultYear()
{
return QDate::currentDate().year();
}
static bool isReasonableYear(int y)
, {
const int current = QDate::currentDate().year();
return (y >= 1886 && y <= current + 1);
}
private:
QString m_model;
int m_year;
};
// ---------------------------
// PassengerVehicle
// ---------------------------
class PassengerVehicle : public Vehicle
{
public:
explicit PassengerVehicle(QObject* parent = nullptr)
: Vehicle(parent)
, m_passengers(defaultPassengers())
{}
PassengerVehicle(const QString& model, int year, int passengers,
QObject* parent = nullptr)
: Vehicle(model, year, parent)
{
setPassengerCount(passengers);
}
int passengerCount() const { return m_passengers; }
void setPassengerCount(int count)
{
m_passengers = (count >= 1 && count <= 15) ? count :
defaultPassengers();
}
QString details() const override
{
return QString("Type=PassengerVehicle, Model=%1, Year=%2,
Passengers=%3")
.arg(model())
.arg(year())
.arg(m_passengers);
}
private:
static int defaultPassengers() { return 4; }
int m_passengers;
};
// ---------------------------
// TransportVehicle
// ---------------------------
class TransportVehicle : public Vehicle
{
public:
explicit TransportVehicle(QObject* parent = nullptr)
: Vehicle(parent)
, m_capacityKg(defaultCapacityKg())
{}
