10 Questions
What is the relationship between a type and its instances?
A type is an abstraction and instances are concrete entities created from that type.
What is the difference between an attribute and a behavior of an instance?
Attributes are characteristics of an instance, while behaviors are the operations the instance can perform.
What is the relationship between a class and an object?
A class is a type and an object is an instance of that type.
What is the purpose of a data member in a class?
To represent an attribute of an instance of the class.
Which of the following statements about types and instances is true?
Many instances can be created from a single type.
What is the purpose of a member function in a C++ class?
To represent an operation that can be performed on the objects of the class
How many sections are needed to write an object-oriented program in C++?
3
What is the purpose of the const keyword in the member function declarations getRadius() and getArea()?
To prevent the member functions from modifying the object's data members
What is the purpose of the using namespace std; line in the code?
To include the C++ standard library
What is the purpose of the double PI = 3.14; line in the getArea() and getPerimeter() member function definitions?
To define a local variable for the value of pi
Learn about class definition, access modifiers, member functions, constructors, destructors, object life cycle, instance members, static members, and more in the context of Computer Science and Engineering at New Mansoura University. Understand the concept of types and instances, as well as separate compilation.
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