C++ Institute Certification Practice Quiz

1. Which of the following is the correct way to declare a pointer to an integer in C++?

Int *ptr;

Int& ptr;

*int ptr;

Ptr int*;

2. What does the 'new' operator do in C++?

Declares a new variable on the stack

Allocates memory on the heap and returns a pointer

Creates a copy of an existing object

Initializes a static variable

3. In object-oriented programming, what is encapsulation?

Bundling data and methods, hiding internal details from outside access

Creating multiple instances of the same class

Inheriting properties from a parent class

Overloading operator functions

4. What is the purpose of a destructor in C++?

To initialize class members

To clean up resources when an object is destroyed

To prevent object copying

To define virtual methods

5. Which keyword is used to inherit from a base class in C++?

Extend

Implements

:

Class Child : public Parent

6. What is the difference between pass-by-value and pass-by-reference?

Pass-by-value copies the data; pass-by-reference uses a pointer to the original

Both create a copy; pass-by-reference is faster

Pass-by-reference only works with pointers

There is no practical difference in C++

7. Which of the following is a characteristic of a pure virtual function?

It has an implementation in the base class

It must be overridden in derived classes and has no body

It cannot be called from any derived class

It is automatically inlined by the compiler

8. What does the STL (Standard Template Library) provide?

Low-level memory management functions

A collection of template classes and functions for common data structures and algorithms

A compiler optimization framework

Debugging and profiling tools

9. In C++, what is the 'const' keyword used for?

To declare a constant variable that cannot be modified

To declare a function that does not modify the object

Both a and b

To optimize runtime performance

10. What is a template in C++?

A blueprint for creating generic classes or functions

A design pattern for object creation

A preprocessor directive

A type of inheritance

11. Which operator is used for dynamic casting in C++?

Static_cast

Dynamic_cast

Reinterpret_cast

Const_cast

12. What is the purpose of the 'this' pointer in a class?

To point to the current object instance

To reference the parent class

To access static members

To enable multiple inheritance

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