Pointers | C Programming Questions and Answers | C Programming Free Online-Tests | LucentBlackBoard

01.

Which of the following gives the memory address of integer variable a?

A.	*a;	B.	a;
C.	&a;	D.	address(a);

Answer and Explanation

Answer: &a;

Explanation:
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02.

Which of the following gives the memory address of a variable pointed to by pointer a?

A.	a;	B.	*a;
C.	&a;	D.	address(a);

Answer and Explanation

Answer: a;

Explanation:
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03.

Which of the following gives the value stored at the address pointed to by pointer a?

A.	a;	B.	val(a);
C.	*a;	D.	&a;

Answer and Explanation

Answer: *a;

Explanation:
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04.

Which of the following is the proper keyword to allocate memory in C?

A.	new	B.	malloc
C.	create	D.	value

Answer and Explanation

Answer: malloc

Explanation:
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05.

Which of the following is the proper keyword to deallocate memory?

A.	free	B.	delete
C.	clear	D.	remove

Answer and Explanation

Answer: free

Explanation:
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06.

Declare a pointer to an integer called address.

A.	int address;	B.	address *int;
C.	int *address;	D.	*int address;

Answer and Explanation

Answer: int *address;

Explanation:
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07.

Assign the address of a float variable balance to the float pointer temp.

A.	temp = &balance;	B.	balance = float temp;
C.	Float temp *balance;	D.	&temp = balance;

Answer and Explanation

Answer: temp = &balance;

Explanation:
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08.

Assign the character value 'W' to the variable pointed to by the char pointer letter.

A.	'W' = *letter;	B.	letter = "W";
C.	letter = *W;	D.	*letter = 'W';

Answer and Explanation

Answer: *letter = 'W';

Explanation:
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09.

What is the output of the following program segment?

int count = 10, *temp, sum = 0;
temp = &count;
*temp = 20;
temp = ∑
*temp = count;
printf("count = %d, *temp = %d, sum = %d\n", count, *temp, sum );

A.	count = 2, *temp = 10, sum = 10	B.	count = 20, *temp = 20, sum = 20
C.	count = 10, *temp = 2, sum = 10	D.	count = 200, *temp = 0.2, sum = 1

Answer and Explanation

Answer: count = 20, *temp = 20, sum = 20

Explanation:
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10.

Declare a pointer to the text string "Hello" called message.

A.	char message = "Hello";	B.	*message = "Hello";
C.	char *message = "Hello";	D.	char message = 'Hello';

Answer and Explanation

Answer: char *message = "Hello";

Explanation:
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