COS2614 Exam pack 2024(Programming: Contemporary Concepts)

COS2614 EXAM
PACK 2024

QUESTIONS AND
ANSWERS
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COS2614 October/November 2014

1 Question 1

1.1 Complete Main for Input Age



MainFunction



QString userInput = QInputDialog::getText(0,”DOB”,”Enter Date of Birth (Format dd/mm/yyyy)”);

QStringList strDOB = QString.split(“/”);

QList<int> IntDOB;

For (int I = 0; I < strDOB.size(); i++)

{

IntDOB.append(strDOB[i].toInt());

}

Int userAge = computerAge(IntDOB[0]/intDOB[1]/intDOB[2]));



QMessageBox::Information(0,”Your Age”, userAge);



1.2 DateList manages a list of QDate. Explain three different ways of designing such a class.

1) class DateList : public QList;

2) You can create a QList<QDates> as a member function.

3) You can have a DateList class which has *QDate objects



#include QDate

#include QList

#include




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COS2614 October/November 2014


1.3 Draw a UML representation of the relationship between QDate and DateList where QDate
instances exist after a DateList Instance has been destroyed.



QList




DateList Date


#Date d; #date QDate




1.4 Name the widget class in QT framework that is only used to input a date

QCalendarWidget




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COS2614 October/November 2014



2 UML Diagram




2.1 Virtual double pay() = 0;


2.2 You cannot instantiate a pure virtual function


2.3 Hourly::Hourly(double hr) : Payment(“Hourly”){
HourlyRate = hr;
Hours = 0.0;
}




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