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A modern, minimalistic design featuring abstract representations of C++ concepts like copy constructors, exception handling, and friend fun<wbr>ctions, with vivid colors and geometric shapes.

Copy Constructor Knowledge Check

Test your understanding of copy constructors, friend functions, and exception handling in C++. This quiz is designed to challenge your knowledge and help reinforce key concepts in object-oriented programming.

Whether you're a beginner or a seasoned developer, you will find:

35 thoughtful questions
A variety of topics related to C++
Immediate feedback on your answers

35 Questions9 MinutesCreated by CodingWizard42

Which of the following is the correct syntax for a Copy Constructor?

MyClass(MyClass other);

MyClass(const MyClass& other);

When is a copy constructor called?

When an object is created from another object of the same type.

When an object is passed by value as a parameter to a function.

When an object is returned from a function.

All of the above.

If you don't declare copy constructors, the C++ compiler will NOT generate one and copy assignment operators for you, thus resulting in a compile error.

True

False

The auto-generated copy constructor and assignment operator will just copy/assign the member variables, one by one. This concept is otherwise known as?

Cloning

Multiple Copy Constructors

Deep Copying

Shallow Copying

A _____ copy constructor must be defined if you don’t want to use the compiler supplied copy constructor. You can also define your own copy constructor.

Public

Protected

Private

None of the above.

A class can allow non-member functions and other classes to access its own private data, through this concept known as?

Data sharing

Peer-to-peer sharing

Friends

Airdrop

When class X declares class Y as a friend, class Y does not automatically have access to the private data of class X.

True

False

Friend status must be explicitly declared – just because X is a friend of Y does not mean Y is a friend of X.

True

False

If Class X is a friend of Class Y and Class Y is a friend of Class Z, Class X is then necessarily a friend of Class Z via transitivity.

True

False

Which of the following displays INCORRECT declaration syntax for friends?

Friend void myFriend();

Friend class ClassTwo;

Friend main pairUp();

None of the above.

A/n _____ method can be a friend of a class. The friendship cannot be inherited. If we want to inherit the friendship we MUST explicitly declare the derived class methods also as friend.

Overloaded

Overridden

Virtual

Static

_____ is the process of giving a different or special meaning to an operator.

Operator overloading

Operator overriding

Method overloading

Method overriding

Which of the following statements is TRUE?

Leftmost operand must be an object (or reference to an object) of the class.

If the left operand is of a different type, the operator function must be a non-member function.

A non-member operator function must be a friend if private or protected members of that class are accessed directly.

All of the above.

In general, if the operation modifies the state of the class object it operates on, it must be a member function.

True

False

Conversely, if the operator does not modify any of its operands, but needs only a representation of the object, it also has to be a member function and is often less confusing as an external friend function.

True

False

<< operator must have a left operand of type istream& and >> operators must have a left operand of type ostream&.

True

False

Errors that make the program do the wrong action. Although they are coded correctly, they cause the program to function differently than expected.

Logic Error

Bugs

Exceptions

Syntax Error

Predictable errors that can be planned for during software development.

Logic Error

Bugs

Exceptions

Syntax Error

It is any unusual event, either erroneous or not, detectable by either hardware or software, that may require special processing.

Error

Bug

Exception

Crash

The special processing that may be required after detecting an exception is called?

Exception Debugging

Rebooting

Exception Repairing

Exception Handling

This type of exception presents invalid conditions in areas outside the immediate control of the program (invalid user input, database problems, network outages, absent files).

Handled Exception

Thrown Exception

Checked Exception

Unchecked Exception

This thype of exception represents defects in the program (often invalid arguments passed to a non-private method).

Handled Exception

Thrown Exception

Checked Exception

Unchecked Exception

This function is used to reduce the overhead for a function that is called many times in a program.

Recursive

Goto

Void

Inline

The Standard C++ Library is a collection of pre-defined functions, constants, classes and objects.

True

False

If it is a large function (more than three or four lines), inlining can retain the size of the executable program.

True

False

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Copy Constructor Knowledge Check

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