Class definition syntax in C++ - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the basic syntax to define a class in C++?

A class in C++ is defined using the <code>class</code> keyword followed by the class name and a pair of curly braces containing members. Example:<br><pre>class MyClass {<br>  // members<br>};</pre>

beginner

What are the two main sections inside a C++ class for member access?

The two main access specifiers are public: and private:. public members can be accessed from outside the class, while private members can only be accessed from within the class.

beginner

How do you declare a member function inside a class?

Inside the class, you declare a member function by specifying its return type, name, and parameters. Example:<br><pre>class MyClass {<br>public:<br>  void greet();<br>};</pre>

beginner

What is the purpose of the semicolon after the closing brace in a class definition?

In C++, the class definition must end with a semicolon <code>;</code>. This tells the compiler that the class definition is complete.

beginner

Can you define member variables inside a class? How?

Yes, member variables are defined inside the class body, usually under <code>private:</code> or <code>public:</code>. Example:<br><pre>class MyClass {<br>private:<br>  int age;<br>public:<br>  int id;<br>};</pre>

Which keyword is used to define a class in C++?

A struct

B class

C object

D define

The class keyword is used to define a class in C++.

What symbol must appear after the closing brace of a class definition?

A .

B :

C ;

D ,

A semicolon ; must follow the closing brace of a class definition.

Which access specifier allows members to be accessed from outside the class?

A internal

B protected

C private

D public

public members can be accessed from outside the class.

How do you declare a member function inside a class?

A By writing its return type, name, and parameters inside the class

B By defining it outside the class only

C By using the keyword <code>function</code>

D By declaring it as a variable

Member functions are declared inside the class with their return type, name, and parameters.

Where are member variables usually declared inside a class?

A Inside <code>public:</code> or <code>private:</code>

B Only inside <code>private:</code>

C Only inside <code>public:</code>

D Outside the class

Member variables can be declared inside either public: or private: sections.

Explain the basic syntax of defining a class in C++ and the role of access specifiers.

Think about how you group related data and functions together and control who can see them.

Describe how to declare member variables and member functions inside a C++ class.

Remember, variables hold data and functions do actions inside the class.