ssrs ean 13 COMPOSITION AND INHERITANCE in Software

Maker Denso QR Bar Code in Software COMPOSITION AND INHERITANCE

COMPOSITION AND INHERITANCE
QR-Code Decoder In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Making Quick Response Code In None
Using Barcode encoder for Software Control to generate, create Denso QR Bar Code image in Software applications.
[CHAP. 11
QR Code 2d Barcode Scanner In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Denso QR Bar Code Creation In C#
Using Barcode generation for VS .NET Control to generate, create QR image in VS .NET applications.
Now all five data members defined in the Person as seen by the following test driver:
QR Creator In VS .NET
Using Barcode drawer for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
QR Code 2d Barcode Drawer In .NET Framework
Using Barcode generator for .NET Control to generate, create QR image in Visual Studio .NET applications.
main0
QR Code 2d Barcode Generator In VB.NET
Using Barcode generation for Visual Studio .NET Control to generate, create QR Code image in Visual Studio .NET applications.
Code-39 Drawer In None
Using Barcode generation for Software Control to generate, create USS Code 39 image in Software applications.
class are accessible from its Student subclass,
Painting UPC-A In None
Using Barcode encoder for Software Control to generate, create UPC Symbol image in Software applications.
Create Data Matrix 2d Barcode In None
Using Barcode maker for Software Control to generate, create DataMatrix image in Software applications.
Student x("Ann Jones", 0, "219360061"); x.setDOB(5, 13, 1977); x.setDOM(8, 29, 1995); x.setDOD(7,4,1826); x.printName(); tout << "\n\t Born: "; x.printDOB 0 ; tout << "\n\t S e x : 'I; x.printSex 0 ; tout << "\n\tMatriculated: "; x.printDOM 0 ; tout & endl;
Drawing Code 128B In None
Using Barcode drawer for Software Control to generate, create Code-128 image in Software applications.
Bar Code Generation In None
Using Barcode creator for Software Control to generate, create barcode image in Software applications.
The pro tee ted access category is a balance between private and public categories: private members are accessible only from within the class itself and its friend classes; protected members are accessible from within the class itself, its friend classes, its derived classes, and their friend classes; pub1 ic members are accessible from anywhere within the file. In general, pro tee ted is used instead of private whenever it is anticipated that a subclass might be defined for the class. A subclass inherits all the pub1 ic and pro tee ted members of its base class. This means that, from the point of view of the subclass, the pub1 ic and pro tee ted members of its base class appear as though they actually were declared in the subclass. For example, suppose that class x and subclass Y are defined as
Code 11 Creator In None
Using Barcode encoder for Software Control to generate, create USD8 image in Software applications.
DataMatrix Printer In C#
Using Barcode creator for Visual Studio .NET Control to generate, create ECC200 image in .NET applications.
class X { public: int a; protected: int b; private: int c; >; class Y : public X { public: int d; > ;
Matrix 2D Barcode Printer In C#
Using Barcode maker for .NET framework Control to generate, create Matrix 2D Barcode image in .NET applications.
GS1 - 13 Creation In .NET
Using Barcode maker for ASP.NET Control to generate, create EAN13 image in ASP.NET applications.
and x and y are declared as
Make Code-128 In Objective-C
Using Barcode maker for iPhone Control to generate, create Code 128A image in iPhone applications.
Paint UPC - 13 In .NET Framework
Using Barcode creation for Reporting Service Control to generate, create EAN13 image in Reporting Service applications.
x x; y y;
UPC-A Supplement 2 Creation In None
Using Barcode encoder for Office Excel Control to generate, create UPC-A Supplement 2 image in Microsoft Excel applications.
Print Bar Code In Java
Using Barcode generation for Eclipse BIRT Control to generate, create bar code image in Eclipse BIRT applications.
Then we can visualize objects x and Y as shown below.
CHAP. 111
COMPOSITION AND INHERITANCE
The pub1 ic member a of class x is inherited as a pub1 ic member of y, and the protected member b of class x is inherited as a protected member of y. But the private member c of class x is not inherited by Y. (The horizontal lines in each object indicate the separate the public, protected, and private regions of the object.)
11.5 OVERRIDING AND DOMINATING INHERITED MEMBERS
If Y is a subclass of x, then Y objects inherit all the public and protected member data and member functions of X. For example, the name data and printName ( > function in the Person class are also members of the Student class. In some cases, you might want to define a local version of an inherited member. For example, if a is a data member of x and if Y is a subclass of X, then you could also define a separate data member named a for Y. In this case, we say that the a defined in Y dominates the a defined in x. Then a reference Y. a for an object Y of class Y will access the a defined in Y instead of the a defined in x. To access the a defined in x, one would use y . x : : a. The same rule applies to member functions. If a function named f ( > is defined in x and another function named f ( > with the same signature is defined in Y, then Y. f ( > invokes the latter function, and y . x : : f ( > invokes the former. In this case, the local function y . f ( > overrides the f ( > function defined in x unless it is invoked as y . x : : f ( > . These distinctions are illustrated in the following example.
EXAMPLE 11.6 Dominating a Data Member and Overriding a Member Function
Here are two classes, x and Y, with Y inheriting from X.
class X { public: void f(> int a; > ;
{ tout
<< "X::f() executing\n";
class Y : public X { public: void f() { tout << "Y::f() executing\n"; int a;
} // overrides X::f() // dominates X::a
But the members of Y have the same signatures as those in X. So Y'S member function f ( ) the f ( ) defined in X, and Y'S data member a dominates the a defined in X.
Copyright © OnBarcode.com . All rights reserved.