Pointer - C Programming MCQ Questions and Answers

1

In C, what is a pointer primarily used for?

A) Decision making B) Code organization C) Variable declaration D) Storing values

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Answer & Solution

Answer: Option C

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2

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

A) 4 B) 8 C) 2 D) 1

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Answer & Solution

Answer: Option A

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3

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

A) int *ptr; B) ptr int; C) int ptr; D) ptr *int;

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Answer & Solution

Answer: Option A

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4

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

A) Arithmetic operation B) Indirection operator C) Member access operator D) Bitwise operation

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Answer & Solution

Answer: Option C

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5

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

A) 0 B) Null C) Undefined D) 1

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Answer & Solution

Answer: Option C

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6

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

A) Address of ptr B) Value pointed to by ptr C) Size of ptr D) Type of ptr

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Answer & Solution

Answer: Option B

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7

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

A) To store any data type's address B) To declare a pointer as uninitialized C) To make a pointer point to null D) To create a generic function

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Answer & Solution

Answer: Option A

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8

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

A) int (*ptr)(int, int); B) ptr(int, int) int; C) function int (*ptr)(int, int); D) ptr function(int, int) int;

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Answer & Solution

Answer: Option A

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9

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

A) Increase the value of ptr by 1 B) Decrease the value of ptr by 1 C) Move ptr to the next memory location D) It's not a valid operation

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Answer & Solution

Answer: Option C

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10

In C, what is the purpose of the 'const' keyword when used with a pointer declaration?

A) To declare a constant pointer B) To make the pointer point to a constant value C) To make the pointer constant D) To prevent pointer declaration

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Answer & Solution

Answer: Option B

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