Storage Class - C Programming MCQ Questions and Answers

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

A) auto B) struct C) extern D) static E) register

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Answer & Solution

Answer: Option B

Solution:

A storage class defines the scope (visibility) and life-time of variables and/or functions within a C Program. These specifiers precede the type that they modify. There are the following storage classes, which can be used in a C Program

auto
register
static
extern

The storage class controls

A) Life time of a variable. B) Linkage of a variable. C) Scope of a variable. D) A and B E) A, B and C

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Answer & Solution

Answer: Option E

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

A) Stack B) Queue C) Array D) Linked list E) Register

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Answer & Solution

Answer: Option A

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What does the "auto" specifier do?

A) It automatically initializes a variable to 0 B) It indicates that a variable’s memory will automatically be preserved C) It automatically increments the variable when used D) It automatically initializes a variable to NULL E) It indicates that a variable’s memory space is allocated upon entry into the block.

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Answer & Solution

Answer: Option B

Solution:

Auto is a automatic storage class. The purpose of auto is it indicates that a variable’s memory will automatically be preserved.

How is a variable accessed from another file?

A) The global variable is referenced via the extern specifier. B) The global variable is referenced via the auto specifier. C) The global variable is referenced via the global specifier. D) The global variable is referenced via the pointer specifier. E) The global variable is referenced via the ext specifier.

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Answer & Solution

Answer: Option A

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