Quiz on C++ Memory Management

Welcome to the C++ Memory Management Quiz! This quiz delves into essential and advanced aspects of memory handling in C++. Each question is accompanied by a detailed explanation, ensuring you not only understand the correct answers but also grasp the underlying concepts. From foundational concepts like stack and heap memory to advanced techniques such as dynamic memory allocation and smart pointers, this quiz covers a comprehensive range of topics. Whether you're new to programming or looking to deepen your expertise, this quiz will help you sharpen your skills in managing memory effectively in C++.

Ready to test your knowledge? Let's begin exploring C++ memory management together!

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Question 1

What is dynamic memory allocation in C++?

  • Management of memory automatically

  • Allocation of memory at compile time

  • Allocation of memory during runtime

  • Increasing allocated memory

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Question 2

What is a memory leak in C++?

  • When the program uses too much memory

  • When memory is not allocated properly

  • When the program tries to access restricted memory

  • When dynamically allocated memory is not freed

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Question 3

Which of the following is not a valid way to allocate memory dynamically for an integer in C++?

  • int* ptr = new int;

  • int* ptr = new;

  • int* ptr = new int(10);

  • int* ptr = new int[1];

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Question 4

What is a dangling pointer in C++ ?

  • A pointer that has not been initialized

  • A pointer that points to a static variable

  • A pointer that points to an invalid memory location

  • A pointer that points to multiple locations

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Question 5

What is the output of the following C++ code?

C++ 
#include <iostream>
using namespace std;

int main()
{

    int* ptr = new int;
    *ptr = 10;
    delete ptr;
    cout << *ptr;
}

  • 0

  • Runtime error

  • 10

  • Garbage value

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Question 6

What of the following is the correct way to use 'new' and 'delete' for dynamic memory allocation of an object in C++ ?

  • MyClass* obj = new MyClass(); delete obj;

  • MyClass obj = new MyClass(); delete obj;

  • MyClass* obj = new MyClass(); delete[] obj;

  • MyClass* obj = new MyClass[1]; delete obj;

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Question 7

How do you check if memory allocation by 'new' was successful in C++?

  • Checking if the pointer is null

  • Using the isAllocated() function

  • Catching an exception

  • Both A and C

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Question 8

What is the initial value of dynamically allocated memory in C++?

  • 0

  • 1

  • Null

  • Indeterminate

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Question 9

What happens when 'new' fails to allocate memory in C++?

  • Program continues execution

  • It returns a null pointer

  • It throws a bad_alloc exception

  • Program terminates immediately

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Question 10

What is RAII in the context of C++ memory management?

  • Resource Allocation Is Initialization

  • Random Access of Independent Indexes

  • Release After Immediate Initialization

  • Resource Allocation In Iteration

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There are 20 questions to complete.

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