oop database doc for studevsgdy fdsyn hdf

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Inheritance allows classes to inherit properties and characteristics from other classes. There are three main types of inheritance: public, private, and protected inheritance which determine how members of the base class are accessed in the derived class. The document also discusses single, multiple, multilevel, hierarchical, and hybrid inheritance providing syntax examples for each. Inheritance is used in object-oriented programming to avoid code redundancy when classes are logically related.

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$INHERITANCE ? Inheritance: ? The capability of a class to derive properties and characteristics from another class is called Inheritance ? .Inheritance is one of the most important features of Object-Oriented Programming. ? Inheritance is a feature or a process in which, new classes are created from the existing classes. ? The new class created is called “derived class” or “child class” and the existing class is known as the “base class” or “parent class”. T ? Syntax: class <derived_class_name> : <access-specifier> <base_class_name> { //body } ? EXAMPLE: #include<iostream> using namespace std; class Person { int id; char name[100]; public: void set_p(); void display_p(); }; void Person::set_p() {$

$cout<<"Enter the Id:"; cin>>id; cout<<"Enter the Name:"; cin>>name; } void Person::display_p() { cout<<endl<<"id: "<< id<<"nName: "<<name; } class Student: private Person { char course[50]; int fee; public: void set_s(); void display_s(); }; void Student::set_s() { set_p(); cout<<"Enter the Course Name:"; cin>>course; cout<<"Enter the Course Fee:"; cin>>fee; }$

$void Student::display_s() { display_p(); cout<<"nCourse: "<<course<<"nFee: "<<fee<<endl; } int main() { Student s; s.set_s(); s.display_s(); return 0; } ? Modes of Inheritance: There are 3 modes of inheritance. 1. Public Mode: If we derive a subclass from a public base class. Then the public member of the base class will become public in the derived class and protected members of the base class will become protected in the derived class. 2. Protected Mode: If we derive a subclass from a Protected base class. Then both public members and protected members of the base class will become protected in the derived class. 3. Private Mode: If we derive a subclass from a Private base class. Then both public members and protected members of the base class will become Private in the derived class. Types Of Inheritance:- 1. Single inheritance 2. Multilevel inheritance 3. Multiple inheritance 4. Hierarchical inheritance 5. Hybrid inheritance ? Single Inheritance: In single inheritance, a class is allowed to inherit from only one class. i.e. one subclass is inherited by one base class only.$

$? Syntax: class subclass_name : access_mode base_class { // body of subclass }; OR class A { ... .. ... }; class B: public A { ... .. ... }; ? Multiple Inheritance: Multiple Inheritance is a feature of C++ where a class can inherit from more than one class. i.e one subclass is inherited from more than one base class. ? Syntax: class subclass_name : access_mode base_class1, access_mode base_class2, .... { // body of subclass }; class B {$

... ..
};
class C
{
... .. ...
};
class A: public B, public C
{
... ... ...
};
? Multilevel Inheritance: In this type of inheritance, a derived class is created
from another derived class.
? Syntax:
class C
{
... .. ...
};
class B:public C
{
... .. ...
};
class A: public B
{
... ... ...
};
? Hierarchical Inheritance: In this type of inheritance, more than one
subclass is inherited from a single base class. i.e. more than one derived class
is created from a single base class.

? Syntax:-
class A
{
// body of the class A.
}
class B : public A
{
// body of class B.
}
class C : public A
{
// body of class C.
}
class D : public A
{
// body of class D.
}
. Hybrid (Virtual) Inheritance: Hybrid Inheritance is implemented by
combining more than one type of inheritance. For example: Combining Hierarchical
inheritance and Multiple Inheritance.
? Why we use inheritance?

We use inheritance in C++ when both the classes in the program have
the same logical domain and when we want the class to use the
properties of its superclass along with its properties.

This document discusses different types of inheritance in object-oriented programming including single, multiple, multilevel, hierarchical, and hybrid inheritance. It provides syntax examples and code samples to illustrate each type of inheritance. Key points made include that single inheritance allows a derived class to inherit from one base class, multiple inheritance allows a class to inherit from more than one parent class, and hybrid inheritance combines two or more inheritance types.

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Inheritance allows classes to inherit properties from other classes, making code reuse and maintenance easier. There are several types of inheritance in C++. Public inheritance allows derived classes to access public and protected members of the base class. Protected inheritance makes public and protected base class members protected in derived classes. Private inheritance makes public and protected base members private in derived classes. Common inheritance types include single inheritance, multilevel inheritance, multiple inheritance, hierarchical inheritance, and hybrid inheritance.

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Single inheritance allows a subclass to inherit properties from a single parent class. The parent class is known as the base class while the subclass is known as the derived class. An example program demonstrates single inheritance by defining a base class "first" with integer properties "a" and "b", and a derived class "second" that inherits from "first" and adds an integer property "c". The program gets user input for "a" and "b", displays their values, and calculates the sum stored in "c".

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Inheritance allows a derived class to inherit features from a base class. A derived class inherits data members and member functions from the base class and can add its own members. Private members of the base class cannot be accessed directly in the derived class. Constructors are not inherited. Single inheritance refers to deriving from one base class, while multiple inheritance allows deriving from more than one base class. Access restrictions of public, protected, and private determine which members can be accessed where.

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The document discusses different types of inheritance in C++ including single, multiple, hierarchical, and multilevel inheritance. Single inheritance involves one base class and derived class. Multiple inheritance allows a class to inherit from multiple base classes. Hierarchical inheritance uses a single base class to derive multiple classes. Multilevel inheritance involves a derived class acting as a base class to further derived classes. Examples of code implementing these inheritance types are provided.

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The document discusses different types of inheritance in C++. It defines inheritance as deriving a new class from an existing class. The main types discussed are: - Single inheritance: A derived class extends a single base class. - Multilevel inheritance: A class is derived from another derived class, having more than one parent class with one acting as the intermediate base class. - Multiple inheritance: A derived class extends multiple base classes. It provides code examples to illustrate single inheritance with one base class and one derived class, and multilevel inheritance with a grandparent, parent, and child class hierarchy. Inheritance allows for code reusability, reliability, and enhancement by adapting features from the base class

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The document discusses various concepts related to inheritance in C++ including types of inheritance (single, multiple, hierarchical, multilevel, hybrid), defining derived classes, visibility modes (private, public), constructors and destructors in derived classes, virtual base classes, virtual functions, pure virtual functions, and abstract base classes. It provides examples and explanations for each concept.

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This document discusses the concept of inheritance in object-oriented programming. It defines inheritance as a technique for creating new classes from existing classes where the new class inherits properties and behaviors from the existing or parent class. It then describes three types of inheritance: single inheritance where a class inherits from one parent class, multi-level inheritance where a class inherits from another derived class, and multiple inheritance where a class can inherit from more than one parent class. Examples are provided for each type of inheritance to illustrate the concept.

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This document provides an agenda and overview of key concepts in object-oriented programming with Java, including: - Class syntax such as access modifiers, static members, and the 'this' keyword. - Constructors, initializers, and how to call other constructors. - Inheritance concepts like subclasses, superclasses, and using the 'super' keyword. - Interfaces as contracts that can be implemented by classes. - Nested classes, both static and inner classes, as well as anonymous classes. - Enums for defining constant sets that can implement methods. The document provides examples to illustrate each concept.

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Inheritance is a mechanism where a derived class extends a base class without modifying it, creating hierarchical relationships. There are different types of inheritance including single, multi-level, multiple, hierarchical, and hybrid. Visibility modes like private, protected, and public determine which members are inherited from the base class. Multilevel inheritance involves deriving a class from a derived class, while multiple inheritance allows a class to inherit from more than one base class. Hybrid inheritance combines different inheritance types, such as hierarchical and multiple inheritance.

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The document provides an agenda and overview of key concepts in object-oriented programming with Java including: 1. Class syntax such as access modifiers, static members, constructors, initializers, and the 'this' keyword. 2. Inheritance concepts like subclasses, superclasses, overriding methods, and the 'super' keyword. 3. Interfaces as contracts that can be implemented by classes to define common behaviors without implementation. 4. Nested classes including static nested classes and inner classes, as well as anonymous classes defined without a class name. 5. Enums, constructors, and initializers are also covered but examples are not shown.

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This document discusses inheritance in C++. It defines inheritance as deriving a new class from an existing class, called the base class. The derived class inherits properties from the base class. There are different types of inheritance including single inheritance with one base class, multiple inheritance with multiple base classes, hierarchical inheritance where one base class has multiple derived classes, and multilevel inheritance where a class derives from another derived class. The document also explains how to define a derived class and the visibility of inherited members depending on whether the inheritance is public, private, or protected.

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This document discusses object-oriented programming (OOP) concepts like classes, objects, inheritance, encapsulation, abstraction, and polymorphism in C++. It provides examples of how each concept is implemented in C++. It explains that classes are user-defined data types that contain data fields and methods. Objects are instances of classes. Inheritance allows classes to inherit attributes from other classes. Encapsulation binds data to the methods that operate on it. Abstraction hides unnecessary details and displays only essential information. Polymorphism allows one message to have multiple implementations.

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Inheritance, Polymorphism, and Virtual Functions allows code reuse through inheritance. It establishes a hierarchical relationship between classes where a derived class inherits attributes and behaviors from its base class. Constructors and destructors of base classes are automatically called when objects of derived classes are created or destroyed. Derived classes can pass arguments to base class constructors and multiple inheritance determines the order of constructor calls. Object composition allows classes to contain instances of other classes to reuse their functionality.

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C++ inheritance allows one class to inherit attributes and behaviors from another class. The class that inherits is called the derived class, while the class being inherited from is called the base class. Inheritance promotes code reuse and helps with program design. The key advantages are that derived classes can reuse code from the base class without redefining members, and class libraries can be easily built and distributed by deriving new classes from existing ones. C++ supports various types of inheritance including single, multiple, hierarchical and multilevel inheritance.

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The document discusses inheritance in C++. It defines inheritance as deriving a class from another class, allowing code reuse and fast development. There are different types of inheritance in C++: single inheritance where a class inherits from one base class; multiple inheritance where a class inherits from more than one base class; multilevel inheritance where a derived class inherits from another derived class; hierarchical inheritance where multiple subclasses inherit from a single base class; and hybrid inheritance which combines different inheritance types. Examples of each inheritance type are provided in C++ code snippets.

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The document discusses key concepts of object-oriented programming in C++ including classes, objects, access modifiers, inheritance, polymorphism, and function overloading. It provides examples of defining classes with data members and member functions, as well as inheriting from base classes and overriding methods in derived classes. The document is intended as an introduction to important OOP concepts in C++.

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Inheritance allows a derived class to inherit attributes and behaviors from a base class. There are different types of inheritance including single, multiple, hierarchical, and multilevel inheritance. Multiple inheritance allows a class to inherit from more than one base class. Function and operator overloading allow defining multiple implementations of the same function or operator based on parameter types.

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2. INHERITANCE ? Inheritance: ? The capability of a class to derive properties and characteristics from another class is called Inheritance ? .Inheritance is one of the most important features of Object-Oriented Programming. ? Inheritance is a feature or a process in which, new classes are created from the existing classes. ? The new class created is called “derived class” or “child class” and the existing class is known as the “base class” or “parent class”. T ? Syntax: class <derived_class_name> : <access-specifier> <base_class_name> { //body } ? EXAMPLE: #include<iostream> using namespace std; class Person { int id; char name[100]; public: void set_p(); void display_p(); }; void Person::set_p() {

3. cout<<"Enter the Id:"; cin>>id; cout<<"Enter the Name:"; cin>>name; } void Person::display_p() { cout<<endl<<"id: "<< id<<"nName: "<<name; } class Student: private Person { char course[50]; int fee; public: void set_s(); void display_s(); }; void Student::set_s() { set_p(); cout<<"Enter the Course Name:"; cin>>course; cout<<"Enter the Course Fee:"; cin>>fee; }

4. void Student::display_s() { display_p(); cout<<"nCourse: "<<course<<"nFee: "<<fee<<endl; } int main() { Student s; s.set_s(); s.display_s(); return 0; } ? Modes of Inheritance: There are 3 modes of inheritance. 1. Public Mode: If we derive a subclass from a public base class. Then the public member of the base class will become public in the derived class and protected members of the base class will become protected in the derived class. 2. Protected Mode: If we derive a subclass from a Protected base class. Then both public members and protected members of the base class will become protected in the derived class. 3. Private Mode: If we derive a subclass from a Private base class. Then both public members and protected members of the base class will become Private in the derived class. Types Of Inheritance:- 1. Single inheritance 2. Multilevel inheritance 3. Multiple inheritance 4. Hierarchical inheritance 5. Hybrid inheritance ? Single Inheritance: In single inheritance, a class is allowed to inherit from only one class. i.e. one subclass is inherited by one base class only.

5. ? Syntax: class subclass_name : access_mode base_class { // body of subclass }; OR class A { ... .. ... }; class B: public A { ... .. ... }; ? Multiple Inheritance: Multiple Inheritance is a feature of C++ where a class can inherit from more than one class. i.e one subclass is inherited from more than one base class. ? Syntax: class subclass_name : access_mode base_class1, access_mode base_class2, .... { // body of subclass }; class B {

6. ... .. }; class C { ... .. ... }; class A: public B, public C { ... ... ... }; ? Multilevel Inheritance: In this type of inheritance, a derived class is created from another derived class. ? Syntax: class C { ... .. ... }; class B:public C { ... .. ... }; class A: public B { ... ... ... }; ? Hierarchical Inheritance: In this type of inheritance, more than one subclass is inherited from a single base class. i.e. more than one derived class is created from a single base class.

7. ? Syntax:- class A { // body of the class A. } class B : public A { // body of class B. } class C : public A { // body of class C. } class D : public A { // body of class D. } . Hybrid (Virtual) Inheritance: Hybrid Inheritance is implemented by combining more than one type of inheritance. For example: Combining Hierarchical inheritance and Multiple Inheritance. ? Why we use inheritance?

8. We use inheritance in C++ when both the classes in the program have the same logical domain and when we want the class to use the properties of its superclass along with its properties.

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