CPP Memory Management & Pointers

Question 1

What is a pointer in C++?

Accepted Answer

A variable storing a memory address

Answer

A type of loop.

Answer

A file handler.

Answer

An object instance.

Question 2

Which operator is used to access the address of a variable?

Accepted Answer

&

Answer

*

Answer

#

Answer

@

Question 3

What does the '*' operator do when used with pointers?

Accepted Answer

Returns the value stored at the memory address

Answer

Returns the address.

Answer

Returns the pointer name.

Answer

Creates a new address.

Question 4

Which keyword is used to deallocate memory in C++?

Accepted Answer

delete

Answer

free

Answer

clear

Answer

remove

Question 5

Which kind of memory is automatically managed in C++?

Accepted Answer

Stack memory

Answer

Heap memory

Answer

Global memory

Answer

Virtual memory

Question 6

What happens if you delete a pointer twice?

Accepted Answer

Causes undefined behavior or crashes

Answer

Increases memory.

Answer

Frees memory again safely.

Answer

Allocates more memory.

Question 7

How do you initialize a null pointer?

Accepted Answer

int* p = nullptr;

Answer

int* p = null;

Answer

int* p = 0;

Answer

int p = pointer;

Question 8

What is a memory leak?

Accepted Answer

Allocated memory not freed

Answer

Stack overflow.

Answer

Too many variables.

Answer

Pointer reinitialization.

Question 9

What does the 'new' keyword return?

Accepted Answer

A memory address

Answer

A reference value.

Answer

A data value.

Answer

An error code.