Pointer - C Programming MCQ Questions and Answers

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Each section contains 100 MCQs on Pointer .

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

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

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In C, what is a function pointer?

A) A pointer that points to a function B) A pointer returned by a function C) A pointer to a variable D) A constant pointer

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the result of the expression &array[0] in C, where array is an integer array?

A) Address of the first element in the array B) Value of the first element in the array C) Size of the array D) Type of the array

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In C, what is a null pointer (NULL or 0)?

A) A pointer that points to the address 0 B) A pointer that points to a null value C) A pointer with an undefined value D) A pointer to a null object

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the result of the expression ptr += 2 in C, where ptr is a pointer?

A) Increase ptr by 2 B) Decrease ptr by 2 C) Move ptr two memory locations forward D) It's not a valid operation

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In C, what is the purpose of the 'calloc' function?

A) Allocate memory on the stack B) Allocate memory on the heap C) Allocate memory for a function D) Allocate memory for an array of variables

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Answer & Solution

Answer: Option D

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What is the result of the expression *ptr = 42 in C, where ptr is a pointer to an int?

A) Set the value pointed to by ptr to 42 B) Set the address pointed to by ptr to 42 C) Set the size of ptr to 42 D) Set ptr to a null value

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In C, what is a pointer to a function that takes no arguments and returns an integer?

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

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the result of the expression *ptr = NULL in C, where ptr is a pointer?

A) Initialize ptr to 0 B) Delete the pointer ptr C) Set the value pointed to by ptr to NULL D) It's not a valid operation

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In C, what is a pointer to a constant pointer (int* const)?

A) A pointer that cannot be modified B) A pointer that points to a constant pointer C) A constant pointer to a constant integer D) A pointer to a constant integer

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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