CO2402 Advanced Programming with C++ Lecture 6 Notes
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Grado
Advanced Programming with C++ (CO2402)
Institución
University Of Central Lancashire Preston (UClan)
This document provides detailed notes from Lecture 6 of the CO2402 course on Advanced Programming with C++. The focus of this lecture is on constructors and destructors, essential components in C++ for managing the lifecycle of objects. The notes explain the purpose, syntax, and characteristics of ...
o Constructors are special member functions in a class that are
automatically called when an object is instantiated. They
initialize the object's data members.
Example: The StackClass constructor initializes the stack top to 0.
2. Syntax and Characteristics
o A constructor has the same name as the class and no return type,
not even void.
o It can be defined with or without parameters. The version without
parameters is called the default constructor.
Example:
, 3. Function Overloading with Constructors
o Constructors can be overloaded to allow different ways of initializing
an object. Each constructor must have a unique parameter list.
Example:
4. Initialisation Section
o The initialization section can be used to initialize class members
before entering the constructor body. It appears after the
constructor's parameter list and starts with a colon.
Example:
5. Best Practices
o Always provide a constructor to ensure proper initialization of
objects.
o If no constructor is defined, C++ provides a default constructor.
However, relying on the compiler-generated constructor can be
risky, as it may not initialize data members properly.
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