This document provides information about constructors and destructors in C++. It defines constructors as member functions that initialize objects when they are created. There are two types of constructors described - default constructors that take no parameters, and parameterized constructors that accept parameters. Destructors are member functions that are called when an object is destroyed in order to perform cleanup. Examples are provided of declaring and calling both constructors and destructors. Copy constructors are discussed as special constructors that are called to initialize a new object as a copy of an existing object of the same class. CBSE exam questions related to constructors and destructors are also included.
CONSTRUCTOR AND DESTRUCTOR PPT BASED ON OOP SUBJECT ......FULLY CONCEPT EXPLAINED WITH SAMPLE PROGRAM IN IT .....FOR MORE SLIDES PLEASE FOLLOW ME ..... THANK YOU
Java Constructor Basics:
→ A constructor initializes an object when it is created.
→ It has the same name as its class.
→ Constructors have no explicit return type.
→ Java automatically provides a default constructor if there is no explicit constructor.
Types of Java Constructors:
→ No Argument Constructor:
→ It doesn't accept any parameter.
Syntax:
Public class TestClass {
Int num;
TestClass() {
num = 10;
}
}
Parameterized Constructor:
→ It accepts parameters.
class TestClass {
int x;
TestClass(int i) {
x = i;
}
}
-------------
Slide 2:
What are the Constructor & destructor ?
Slide 3:
Characteristics of Constructor
Slide 4:
Special CHaracteristics of Destructor
Slide 5:
Similarities
Slide 6:
Dissimilarities
Slides 7:
Default Constructor with example
Slide 8:
Parameterized Constructor
Slide 9:
Copy Constructor with example
Slide 10:
Destructor
Slide 11:
Bibliography
Constructors, Destructors, call in parameterized Constructor, Multiple constructor in a class, Explicit/implicit call, Copy constructor, Dynamic Constructors and call in parameterized Constructor
What is a constructor?
Constructor is a method which gets executed automatically when we create or instantiate object of that class having constructor.
More Highlights of Constructor
A single class can have multiple constructors means we can have more than one constructor in a class. It is also called as overloaded constructor.
A benefit of using a constructor is that it guarantees that the object will go through a proper initialization before an object being used means we can pre-initialize some of the class variables with values before an object being used.
A constructor can be called another constructor by using "this" keyword. "this" keyword is the current instance of a class.
chap 8 : The java.lang and java.util Packages (scjp/ocjp)It Academy
JAVA CERTIFICATION EXAM OBJECTIVES
COVERED IN THIS CHAPTER:
3.1 Develop code that uses the primitive wrapper classes
(such as Boolean, Character, Double, Integer, etc.) and/or
autoboxing and unboxing. Discuss the differences between
the String, StringBuilder, and StringBuffer classes.
3.4 Use standard J2SE APIs in the java.text package to
correctly format or parse dates, numbers, and currency
values for a specific locale, and, given a scenario, determine
the appropriate methods to use if you want to use the default
locale or a specific locale. Describe the purpose and use of the
java.util.Locale class.
3.5 Write code that uses standard J2SE APIs in the java.util
and java.util.regex packages to format or parse strings or
streams. For strings, write code that uses the Pattern and
Matcher classes and the String.split method. Recognize
and use regular expression patterns for matching (limited
to . (dot), * (star), + (plus), ?, \d, \s, \w, [], ()). The use of
*, +, and ? will be limited to greedy quantifiers, and the
parenthesis operator will be used only as a grouping
mechanism, not for capturing content during matching.
For streams, write code using the Formatter and Scanner
classes and the PrintWriter.format/printf methods. Recognize
and use formatting parameters (limited to %b, %c, %d, %f, %s)
in format strings.
6.1 Given a design scenario, determine which collection
classes and/or interfaces should be used to properly
implement that design, including the use of the
Comparable interface.
Learn more at http://www.cbuilderxe.com. Embarcadero C++Builder® XE3 is the fastest way to create high performance native applications for Windows 8 and Mac OS X Mountain Lion, including Retina display with a single C++ codebase. Develop for Windows and get to Mac instantly with C++Builder’s advanced compilers, visual IDE, and thousands of available components. C++Builder combines a powerful ANSI C++ tool chain with rich and extensible visual frameworks for rapidly building lightning-fast native workstation, touch-screen, kiosk, multi-tier, Web, and cloud applications. Deliver pixel perfect native user interfaces and get the fastest path to Windows 8 for existing VCL and FireMonkey applications.
CONSTRUCTOR AND DESTRUCTOR PPT BASED ON OOP SUBJECT ......FULLY CONCEPT EXPLAINED WITH SAMPLE PROGRAM IN IT .....FOR MORE SLIDES PLEASE FOLLOW ME ..... THANK YOU
Java Constructor Basics:
→ A constructor initializes an object when it is created.
→ It has the same name as its class.
→ Constructors have no explicit return type.
→ Java automatically provides a default constructor if there is no explicit constructor.
Types of Java Constructors:
→ No Argument Constructor:
→ It doesn't accept any parameter.
Syntax:
Public class TestClass {
Int num;
TestClass() {
num = 10;
}
}
Parameterized Constructor:
→ It accepts parameters.
class TestClass {
int x;
TestClass(int i) {
x = i;
}
}
-------------
Slide 2:
What are the Constructor & destructor ?
Slide 3:
Characteristics of Constructor
Slide 4:
Special CHaracteristics of Destructor
Slide 5:
Similarities
Slide 6:
Dissimilarities
Slides 7:
Default Constructor with example
Slide 8:
Parameterized Constructor
Slide 9:
Copy Constructor with example
Slide 10:
Destructor
Slide 11:
Bibliography
Constructors, Destructors, call in parameterized Constructor, Multiple constructor in a class, Explicit/implicit call, Copy constructor, Dynamic Constructors and call in parameterized Constructor
What is a constructor?
Constructor is a method which gets executed automatically when we create or instantiate object of that class having constructor.
More Highlights of Constructor
A single class can have multiple constructors means we can have more than one constructor in a class. It is also called as overloaded constructor.
A benefit of using a constructor is that it guarantees that the object will go through a proper initialization before an object being used means we can pre-initialize some of the class variables with values before an object being used.
A constructor can be called another constructor by using "this" keyword. "this" keyword is the current instance of a class.
chap 8 : The java.lang and java.util Packages (scjp/ocjp)It Academy
JAVA CERTIFICATION EXAM OBJECTIVES
COVERED IN THIS CHAPTER:
3.1 Develop code that uses the primitive wrapper classes
(such as Boolean, Character, Double, Integer, etc.) and/or
autoboxing and unboxing. Discuss the differences between
the String, StringBuilder, and StringBuffer classes.
3.4 Use standard J2SE APIs in the java.text package to
correctly format or parse dates, numbers, and currency
values for a specific locale, and, given a scenario, determine
the appropriate methods to use if you want to use the default
locale or a specific locale. Describe the purpose and use of the
java.util.Locale class.
3.5 Write code that uses standard J2SE APIs in the java.util
and java.util.regex packages to format or parse strings or
streams. For strings, write code that uses the Pattern and
Matcher classes and the String.split method. Recognize
and use regular expression patterns for matching (limited
to . (dot), * (star), + (plus), ?, \d, \s, \w, [], ()). The use of
*, +, and ? will be limited to greedy quantifiers, and the
parenthesis operator will be used only as a grouping
mechanism, not for capturing content during matching.
For streams, write code using the Formatter and Scanner
classes and the PrintWriter.format/printf methods. Recognize
and use formatting parameters (limited to %b, %c, %d, %f, %s)
in format strings.
6.1 Given a design scenario, determine which collection
classes and/or interfaces should be used to properly
implement that design, including the use of the
Comparable interface.
Learn more at http://www.cbuilderxe.com. Embarcadero C++Builder® XE3 is the fastest way to create high performance native applications for Windows 8 and Mac OS X Mountain Lion, including Retina display with a single C++ codebase. Develop for Windows and get to Mac instantly with C++Builder’s advanced compilers, visual IDE, and thousands of available components. C++Builder combines a powerful ANSI C++ tool chain with rich and extensible visual frameworks for rapidly building lightning-fast native workstation, touch-screen, kiosk, multi-tier, Web, and cloud applications. Deliver pixel perfect native user interfaces and get the fastest path to Windows 8 for existing VCL and FireMonkey applications.
Digitale Transformation in der öffentlichen VerwaltungSven Ruoss
Digitale Transformation in der Schweiz - Lernen von den Besten - Digitale Schweiz 2020 - 5 Thesen zu Öffentliche Verwaltung goes Digital - Key Takeaways
Constructors are special class functions which performs initialization of every object. The Compiler calls the Constructor whenever an object is created. Destructor on the other hand is used to destroy the class object.
A constructor is a member function of a class which initializes objects of a class. In C++, Constructor is automatically called when object(instance of class) create. It is special member function of the class.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
3. Constructors
A Member function with the same name as its
classis called Constructor and it is used to
initilize the objects of that class type with a
legal value.
A Constructor is a special member function of a
class that is called automatically when an
object of class is created.
4. Example :
class Student
{
int rollno;
float marks;
public:
student( ) //Constructor
{
rollno=0;
marks=0.0;
}
//other public members
};
// Implicit Call
Student ob1;
// Explicit Call
Student ob1=student();
5. TYPES OF CONSRUCTORS
1. Default Constructor: A constructor that accepts no
parameter is called the Default Constructor. If you don't
declare a constructor or a destructor, the compiler makes
one for you. The default constructor and destructor take
no arguments and do nothing.
2. Parameterized Constructors: A constructor that accepts
parameters for its invocation is known as parameterized
Constructors ,also called as Regular Constructors
6. DESTRUCTORS
A destructor is also a member function whose
name is the same as the class name but is
preceded by tilde(“~”).It is automatically by the
compiler when an object is destroyed.
Destructors are usually used to deallocate
memory and do other cleanup for a class object
and its class members when the object is
destroyed.
A destructor is called for a class object when that
object passes out of scope or is explicitly deleted.
7. DESTRUCTORS
Example :
class TEST
{ int Regno,Max,Min,Score;
Public:
TEST( ) // Default Constructor
{ }
TEST (int Pregno,int Pscore) // Parameterized Constructor
{
Regno = Pregno ;Max=100;Max=100;Min=40;Score=Pscore;
}
~ TEST ( ) // Destructor
{ Cout<<”TEST Over”<<endl;}
};
8. The following points apply to constructors and
destructors:
Constructors and destructors do not have return type, not
even void nor can they return values.
References and pointers cannot be used on constructors
and destructors because their addresses cannot be taken.
Constructors cannot be declared with the keyword virtual
Constructors and destructors cannot be declared static,
const, or volatile.
Unions cannot contain class objects that have
constructors or destructors.
9. The following points apply to constructors and
destructors:
The compiler automatically calls constructors when
defining class objects and calls destructors when class
objects go out of scope
Derived classes do not inherit constructors or destructors
from their base classes, but they do call the constructor and
destructor of base classes.
The default destructor calls the destructors of the base
class and members of the derived class.
10. The following points apply to Constructors and
Destructors:
The destructors of base classes and members are called in
the reverse order of the completion of their constructor:
The destructor for a class object is called before
destructors for members and bases are called.
You can have only one destructor for a class.
Destructors can’t be overloaded.
They can not be inherited.
No argument can be provided to destructors.
11. Copy Constructor
A copy constructor is a special constructor in the C++
programming language used to create a new object as a
copy of an existing object.
A copy constructor is a constructor of the form classname
(classname &).The compiler will use the copy constructors
whenever you initialize an instance using values of another
instance of the same type.
Copying of objects is achieved by the use of a copy
constructor and a assignment operator.
12. Copy Constructor Example :
class Sample{ int i, j;
public:
Sample(int a, int b) // constructor
{ i=a;j=b;}
Sample (Sample & s) //copy constructor
{ j=s.j ; i=s.j;
cout <<”n Copy constructor working n”;
}
void print (void)
{cout <<i<< j<< ”n”;}
};
Note : The argument to a copy constructor is passed by reference, the
reason being that when an argument is passed by value, a copy of it is
constructed. But the copy constructor is creating a copy of the object for
itself, thus ,it calls itself. Again the called copy constructor requires another
copy so again it is called. In fact it calls itself again and again until the
compiler runs out of the memory .so, in the copy constructor, the argument
must be passed by reference.
13. CALLING COPY CONSTRUCTOR
Sample s2(s1); // s1 is copied to s2. Copy constructor is called.
Sample s3=s1; // s1 is copied to s3. copy constructor called
again
14. When Copy Constructor is called?
When an object is passed by value to a function:
The pass by value method requires a copy of the passed
argument to be created for the function to operate upon .Thus
to create the copy of the passed object, copy constructor is
Invoked If a function with the following prototype :
void cpyfunc(Sample ); // Sample is a class then for the
following function call
cpyfunc(obj1); // obj1 is an object of Sample type the copy
constructor would be invoked to create a copy of the obj1
object for use by cpyfunc().
15. When Copy Constructor is called?
When a function returns an object :
When an object is returned by a function the copy constructor
is invoked
Sample cpyfunc(); // Sample is a class and it is return type
of cpyfunc()
If func cpyfunc() is called by the following statement
obj2 = cpyfunc();
Then the copy constructor would be invoked to create a copy
of the value returned by cpyfunc() and its value would be
assigned to obj2. The copy constructor creates a temporary
object to hold the return value of a function returning an
object.
17. 2 (b) Answer the questions (i) and (ii) after going
through the following class : Delhi 2006
class Interview
{
int month;
public:
Interview(int y) {month=y;} //Constructor 1
Interview(Interview&t); //Constructor 2
};
(i) Create an object, such that it invokes
Constructor 1 1
(ii) Write complete definition for Constructor 2 1
18. (b) Interview Ob1(5);
OR
int N=5; Interview Ob1(N);
(1 mark for proper declaration of Object)
Interview(Interview &t)
{
month = t.month;
}
(1 mark for writing proper statements inside definition of Constructor
2)
OR
(1 mark for writing the conceptual definition of the copy constructor)
OR
(Only ½ mark for mentioning the term: copy constructor)
Note: Any valid statement in C++ working with t as an object of
Interview must be accepted while defining the constructor.
19. (b) Answer the questions (i) and (ii) after going
through the following class : Outside Delhi 2006
class Exam
{
int year;
public:
Exam(int y) { year=y;} //Constructor 1
Exam(Exam & t); //Constructor 2
};
(i) Create an object, such that it invokes
Constructor 1. 1
(ii) Write complete definition for Constructor 2. 1
20. (i) Exam Ob1(2015);
(ii) Exam (Exam &t)
{year = t.year;}
OR
Copy constructor: It is an overloaded constructor, in which
object of the same class is passed as parameter.
(1 mark for writing proper statements inside definition of
Constructor 2)
OR
(1 mark for any valid statement in C++ working with t as an
object of Exam)
OR
(1 mark for writing the definition/explanation of the concept of
copy constructor)
OR
(1/2 mark for mentioning only the term copy constructor)