Storage Class MCQs

Question 1

What is the default value of an uninitialized 'static' variable in C?

Accepted Answer

Zero

Answer

Undefined

Answer

Garbage value

Answer

one

Question 2

In which storage class are variables typically stored in the heap memory?

Accepted Answer

auto

Answer

static

Answer

extern

Answer

register

Question 3

What is the main purpose of the 'volatile' storage class in C?

Accepted Answer

Indicates that a variable may change unexpectedly

Answer

Prevents memory allocation

Answer

Forces a variable to be stored in registers

Answer

Increases variable scope

Question 4

Which of the following is not a storage class in C?

Accepted Answer

struct

Answer

auto

Answer

extern

Answer

static

Question 5

The storage class controls

Accepted Answer

A, B and C

Answer

Linkage of a variable.

Answer

Scope of a variable.

Answer

A and B

Question 6

When a function is recursively called all the automatic variables are stored in a

Accepted Answer

Stack

Answer

Queue

Answer

Array

Answer

Linked list

Question 7

What does the "auto" specifier do?

Accepted Answer

It indicates that a variable’s memory will automatically be preserved

Answer

It automatically initializes a variable to 0

Answer

It automatically increments the variable when used

Answer

It automatically initializes a variable to NULL

Question 8

How is a variable accessed from another file?

Accepted Answer

The global variable is referenced via the extern specifier.

Answer

The global variable is referenced via the auto specifier.

Answer

The global variable is referenced via the global specifier.

Answer

The global variable is referenced via the pointer specifier.