Function Overloading and Exception Handling Quiz

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Questions and Answers

What term is used interchangeably with parameters in C++?

References

Values

Locals

Arguments (correct)

In C++, what does 'pass by value' mean?

The function modifies the argument directly

The function receives a copy of the argument value (correct)

The argument is passed as a reference

The function receives a reference to the argument

In C++, what happens when modifications are made to a parameter passed 'by value'?

Changes reflect in the actual argument

Function crashes

Argument value becomes NULL

Changes only affect the parameter (correct)

Which type of argument passing is also known as 'call by reference' in C++?

Pass by pointer Signup and view all the answers

Which of the following is a common outcome of passing arguments 'by reference' in C++?

Changes made to parameters reflect in the argument Signup and view all the answers

What does Program 1 demonstrate in C++?

Call by value Signup and view all the answers

What is the purpose of using constructors in object-oriented programming?

To create objects of a class Signup and view all the answers

What is the purpose of using virtual functions in C++?

To enable dynamic polymorphism Signup and view all the answers

Which OOP concept involves creating multiple functions with the same name but different parameters?

Function overloading Signup and view all the answers

Which OOP feature is responsible for binding data variables and functions together within a class?

Encapsulation Signup and view all the answers

In OOP, what does operator overloading allow?

Extending the functionality of existing operators Signup and view all the answers

What is the main purpose of exception handling in object-oriented programming?

To prevent unexpected program termination Signup and view all the answers

What is a major difference between C++ and C, as mentioned in the text?

C++ supports user-defined operators and functions overloading. Signup and view all the answers

What feature of C++ makes it more worthy and useful for programmers compared to C?

Stronger Type Checking Signup and view all the answers

What concept is mentioned in the text that allows redefining a function to provide a new definition?

Function Overloading Signup and view all the answers

What kind of functions in C++ make the complete function body act like a Macro?

Inline Functions Signup and view all the answers

Which feature of C++ plays a role in handling unresolved exceptions or errors produced at runtime?

Exception Handling Signup and view all the answers

Which feature in C++ allows functions to be called even when their actual object type isn't known at compile time?

Virtual Functions Signup and view all the answers

Study Notes

Object-Oriented Programming (OOP)

OOP is a programming paradigm that uses objects and classes to organize and structure code.
It provides a way to reuse code and create more modular and maintainable programs.

Objects

Objects are instances of classes and have data members and member functions.
They are the basic unit of OOP.

Class

A class is a blueprint for objects, defining what data variables the object will have and what operations can be performed on it.
It is similar to structures in C language, but also contains functions.

Abstraction

Abstraction is the process of showing only the essential features of an application and hiding the details.
In C++, classes provide methods to access and use data variables, but the variables are hidden from direct access.

Encapsulation

Encapsulation is the process of binding data variables and functions together in a class.
It is also known as data binding.

Inheritance

Inheritance is a mechanism for reusing code by creating a new class based on an existing class.
The new class, called the derived class, inherits all the functions and properties of the existing class, called the base class.

Polymorphism

Polymorphism is the ability to create functions with the same name but different arguments, which can perform different tasks.
It allows for more flexibility and generic code.

Functions

C++ supports two styles of passing arguments: pass by value and pass by reference.
Pass by value creates a copy of the argument, while pass by reference passes the original variable.

Exception Handling

Exception handling is a feature of OOP that allows for handling unresolved exceptions or errors produced at runtime.

Instances

An instance is a specific object created from a class.
A blueprint for a house design is like a class description, and all the houses built from that blueprint are objects of that class.

Merits of C++ over C Language

C++ is an object-oriented language, whereas C language is a procedural language.
C++ has stronger type checking, OOPS features, operator overloading, function overloading, exception handling, virtual functions, constructors, and destructors.
It also has inline functions, which are safer than macros in C language.

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Description

This quiz covers the concept of function overloading, which allows functions with the same name to have different implementations, as well as exception handling in object-oriented programming. Learn about redefining functions and handling runtime errors. Prepared by Prof. Anand Motwani from SCSE, VIT Bhopal University.