IT1050 Object Orientation Lecture 05 Quiz
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Questions and Answers

What should students be able to do at the end of the lecture?

  • Analyze objects in C++
  • Understand object-oriented principles in Java
  • Develop algorithms in C++
  • Implement a class and create objects in C++ (correct)

    • In Object-Oriented Programming, what does the private part of the class definition specify?

  • Properties that can be directly accessed from outside the class
  • Methods accessible from outside the class
  • Properties visible outside the class
  • Properties (data members) hidden from outside the class (correct)

    • What is the purpose of the public part in a class definition?

  • To define methods accessible from outside the class (correct)
  • To define private data members
  • To specify visible properties of a class
  • To restrict access to class methods

    • What steps are involved in writing an Object-Oriented Program?

    <p>Analyse, identify, develop, build</p> Signup and view all the answers

    Which part of a C++ class definition hides data members from outside access?

    <p>Private part</p> Signup and view all the answers

    What is the primary role of methods specified in the public part of a C++ class?

    <p>Provide functionality accessible from outside the class</p> Signup and view all the answers

    What is the purpose of the setStudentNo() function in the Student class?

    <p>To set the student number for the student object</p> Signup and view all the answers

    What is the purpose of the assignMarks() function in the Student class?

    <p>To assign the marks for the student</p> Signup and view all the answers

    What is the purpose of the calcAvg() function in the Student class?

    <p>To calculate the average marks of the student</p> Signup and view all the answers

    Which of the following is the correct way to create a single object of the Rectangle class?

    <p>Rectangle rect;</p> Signup and view all the answers

    Which of the following is the correct way to create multiple objects of the Rectangle class?

    <p>Rectangle rect1, rect2;</p> Signup and view all the answers

    How can you access the public methods of a Rectangle object?

    <p>Using the dot operator (<code>.</code>)</p> Signup and view all the answers

    Which of the following is the correct way to define a class in C++?

    <p>class Rectangle { private: int width, length; public: void setWidth(int); void setLength(int); int calcArea(); };</p> Signup and view all the answers

    What is the purpose of the private access specifier in a C++ class?

    <p>It restricts the data members and member functions to be accessed only within the class they are defined.</p> Signup and view all the answers

    What is the purpose of the public access specifier in a C++ class?

    <p>It allows the data members and member functions to be accessible from anywhere in the program.</p> Signup and view all the answers

    In the given Rectangle class implementation, what is the purpose of the setWidth and setLength member functions?

    <p>They are used to set the values of the width and length data members, respectively.</p> Signup and view all the answers

    What is the purpose of the calcArea member function in the Rectangle class?

    <p>It is used to calculate the area of the rectangle using the formula <code>length * width</code>.</p> Signup and view all the answers

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