Pointer MCQs

Question 1

In C, what is a pointer primarily used for?

Accepted Answer

Variable declaration

Answer

Decision making

Answer

Code organization

Answer

Storing values

Question 2

What is the result of the expression sizeof(int*) in C, assuming an int pointer on a typical system?

Accepted Answer

4

Answer

8

Answer

2

Answer

1

Question 3

In C, how do you declare a pointer variable that can store the address of an integer?

Accepted Answer

int *ptr;

Answer

ptr int;

Answer

int ptr;

Answer

ptr *int;

Question 4

What is the purpose of the '->' operator in C when used with pointers?

Accepted Answer

Member access operator

Answer

Arithmetic operation

Answer

Indirection operator

Answer

Bitwise operation

Question 5

In C, what is the value of a pointer variable if it hasn't been assigned any address?

Accepted Answer

Undefined

Answer

0

Answer

Null

Answer

1

Question 6

What is the result of the expression *ptr in C, where ptr is a pointer to an int?

Accepted Answer

Value pointed to by ptr

Answer

Address of ptr

Answer

Size of ptr

Answer

Type of ptr

Question 7

In C, what is the purpose of the 'void' pointer type (void*)?

Accepted Answer

To store any data type's address

Answer

To declare a pointer as uninitialized

Answer

To make a pointer point to null

Answer

To create a generic function

Question 8

How do you declare a pointer to a function that takes two integers and returns an integer in C?

Accepted Answer

int (*ptr)(int, int);

Answer

ptr(int, int) int;

Answer

function int (*ptr)(int, int);

Answer

ptr function(int, int) int;

Question 9

What is the result of the expression ptr++ in C, where ptr is a pointer?

Accepted Answer

Move ptr to the next memory location

Answer

Increase the value of ptr by 1

Answer

Decrease the value of ptr by 1

Answer

It's not a valid operation