SINGLE INHERITANCE

SINGLE INHERITANCE:

If a class is derived from only one base class it is called as single inheritance.

In single inheritance only one base class and one derived class are present.

Here X is a base class and Y is a derived class. Further, no class is derived from Y. This is a single inheritance.

The general form of single inheritance is as follows:

class <name of the derived class>: <access specifier> <name of the base class>

Example 3:

#include<iostream.h>

#include<conio.h>

class A

{

private:

int a, b;

public:

void setVal(int x, int y)

{

a=x;

b=y;

}

};

class B: public A  //class B inherits class A

{

private:

int c;

public:

B(int z)        //one argument constructor of B.

{

c=z;

}

void show()

{

cout<<”a=”<<a<<”\nb=”<<b<<”\nC=<<c”;

}

};

void main()

{

B bObj(30);

bObj.setVal(10,20)   //

clrscr();

obj.show ();

}

Output:

A=10

B=20

C=30

In the above example program class B is inherited by class A. So the member variables and member functions of class A are passed to class B.

Inheritance

Types of Inheritance