C++ classes, constructors and destructors, the rule of three and five, inheritance, virtual functions, operator overloading and friend.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- What is the default access level for class members in C++?
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private- What keyword restricts a class member to be inaccessible outside the class?
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private- How do struct and class defaults differ in C++?
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struct members are public by default, class members are private by default- What keyword grants derived classes access to a base member while blocking outside access?
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protected- What is a default constructor?
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A constructor that takes no parameters- What is a parameterized constructor?
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A constructor that accepts one or more arguments to initialize member variables- What is a copy constructor?
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A constructor that initializes a new object as a copy of an existing object of the same class- What is a move constructor?
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A constructor that transfers ownership of resources from a temporary or rvalue object to a new object- When does the compiler automatically generate a default constructor?
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When a class defines no constructors at all- How do you prevent the compiler from auto-generating a default constructor?
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Define at least one explicit constructor or use = delete on the default constructor- What is the primary purpose of a destructor?
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To clean up resources and deallocate memory when an object is destroyed- How many destructors can a class have?
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Exactly one- When is a destructor called?
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When an object goes out of scope or is explicitly deleted with the delete operator- What is the Rule of Three?
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If a class defines a destructor, copy constructor, or copy assignment operator, it should define all three- What is the Rule of Five?
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If a class defines destructor, copy constructor, or copy assignment operator, it should also define move constructor and move assignment operator
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