constructor , operator overloading ,friend function

Feb 19, 2019Download as pptx, pdf2 likes83 views

This document discusses three topics in C++ programming: constructors, friend functions, and operator overloading. Constructors initialize objects and have the same name as the class. Friend functions can access private members of a class. Operator overloading gives special meanings to operators for user-defined types.

OBJECT
PROGRAMING
WITH CPP
Topics of our presentation is :
1. Constructor
2.Friend function
3. Operator overloading

CONSTRUCTOR
 A constructor is a “special” member function whose task is
to initialize the objects of its class.
 It is special because its name is the same as class name.A
Constructor is invoked whenever an object of it’s associate
class is created.
 EXAMPLE :

 They should be declared in the public section.
 They do not have any return types, not even void .
 EXAMPLE :

FRIEND FUNCTION
 In C++ a FRIEND FUNCTION that is a
“friend” of a given class is allowed access to
private and protected data in that class.
 A function can be made a friend function using
keyword friend.

 Any friend function is preceded with friend keyword.
 The declaration of friend function should be made
inside body of the class starting with keyword friend.
 SYNTAX :

OPERATOR OVERLOADING
 This means C++ has the ability to provide the operators
with a special meaning for a data type, this ability is
known as operator overloading.

 Almost any operator can be overloaded in
c++.However there are few operator which
can not be overloaded and they follows:

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constructor , operator overloading ,friend function

1. OBJECT PROGRAMING WITH CPP Topics of our presentation is : 1. Constructor 2.Friend function 3. Operator overloading

2. CONSTRUCTOR  A constructor is a “special” member function whose task is to initialize the objects of its class.  It is special because its name is the same as class name.A Constructor is invoked whenever an object of it’s associate class is created.  EXAMPLE :

3.  They should be declared in the public section.  They do not have any return types, not even void .  EXAMPLE :

4. FRIEND FUNCTION  In C++ a FRIEND FUNCTION that is a “friend” of a given class is allowed access to private and protected data in that class.  A function can be made a friend function using keyword friend.

5.  Any friend function is preceded with friend keyword.  The declaration of friend function should be made inside body of the class starting with keyword friend.  SYNTAX :

6. OPERATOR OVERLOADING  This means C++ has the ability to provide the operators with a special meaning for a data type, this ability is known as operator overloading.

7.  Almost any operator can be overloaded in c++.However there are few operator which can not be overloaded and they follows:

8.  Operator overloading syntax :

9. THANK YOU

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