When a class inherits from a single base class, it is known as single inheritance. It is the most simple form of inheritance.
While inheriting data from base class , derived class may use any one of the visibility modes to specify the data access level. It may public derivation, private derivation or protected derivation.
Example:
Class ABC : private XYZ // private derivation of Class XYZ
{
int no;
public:
void get ( ) ;
void show ( ) ;
};
In above code, Class ABC is inheriting data from class XYZ using private derivation. Only one Base class and one Derived class is involved in single level inheritance.
Example:
#include<iostream.h>
#include<conio.h>
class worker
{
int age;
char name[10];
public:
void get()
{
cout <<”yout name please”
cin >> name;
cout <<”your age please” ;
cin >> age;
}
void show()
{
cout <<”In My name is :”<<name<<”In My age is :”<<age;
}
};
class manager :: public worker //derived class (publicly)
{
int now;
public:
void get()
{
worker :: get(); //the calling of base class fn.
cout << “number of workers under you”;
cin >> now;
cin>>name>>age;
}
void show()
{
worker :: show(); //calling of base class o/p fn.
cout <<“in No. of workers under me are: “ << now;
}
};
void main()
{
clrscr () ;
worker W1;
manager M1;
M1.get( );
M1.show( );
}Output:
Your name please
Ravinder
Your age please
27
number of workers under you
30
My name is : Ravinder
My age is : 27
No. of workers under me are : 30
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