What will the following code output?

The address of the number variable

After this code executes, which of the following statements is true?

ptr will hold the address of numbers[1].

The statement int *ptr = new int;

assigns an address to the variable named ptr

What will the following statement output? cout << &num1;

The memory address of the variable called num1

When you work with a dereferenced pointer, you are actually working with ________.

the actual value of the "pointed" variable

What does the following statement do? double *num2;

Declares a pointer variable named num2.

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Data Structure - Pointers

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Questions 16

Answers

1
What will the following code output?
An asterisk followed by the address of the number variable
22
The address of the number variable
An asterisk followed by 22
2
With pointer variables, you can ________ manipulate data stored in other variables.
None of these
never
indirectly
seldom
3
What will the following code output?
An asterisk followed by 22
22
An asterisk followed by the address of the number variable
The address of the number variable
4
A pointer can be used as a function argument, giving the function access to original argument.
False
True
5
The ________, also known as the address operator, returns the memory address of a variable.
percent sign (%)
ampersand ( & )
asterisk ( * )
exclamation point ( ! )
6
What is the value of *sum after the statements?
6
address of variable sum
7
9
7
________ can be used as pointers.
Array names
Punctuation marks
All of these
Numeric constants
8
Every byte in the computer's memory is assigned a unique ________.
address
dynamic allocation
name
pointer
9
After this code executes, which of the following statements is true?
ptr will hold the address of numbers[1].
This code will not compile.
ptr will hold the address of numbers[2].
ptr will hold the address of numbers[0].
10
The statement int *ptr = new int;
assigns an integer less than 32767 to the variable named ptr
creates a new pointer named int
results in a compiler error
assigns an address to the variable named ptr
11
The contents of pointer variables may be changed with mathematical statements that perform ___.
multiplication and division
all mathematical operations that are legal in C++
addition and subtraction
B and C
12
What will the following code output?
1
3
0
2
13
What will the following statement output? cout << &num1;
The number 1
The memory address of the variable called num1
The string "&num1"
The value stored in the variable called num1
14
Which of the following statements is not valid C++ code?
int ptr = &num1;
float num1 = &ptr2;
All of these are invalid.
int ptr = int *num1;
15
When you work with a dereferenced pointer, you are actually working with ________.
the actual value of the "pointed" variable
a copy of the value pointed to by the pointer variable
a variable whose memory has been allocated
16
What does the following statement do? double *num2;
Initializes a variable named *num2.
Declares a double variable named num2.
Declares a pointer variable named num2.
Declares and initializes an pointer variable named num2.

Data Structure - Pointers Flashcards | StudBud

Data Structure - Pointers

16 termsStudBud Administration117 plays

Data Structure - Pointers

Flashcards16 cardsFPractice quizPHost liveL

Questions 16

Answers

1
What will the following code output?
An asterisk followed by the address of the number variable
22
The address of the number variable
An asterisk followed by 22
2
With pointer variables, you can ________ manipulate data stored in other variables.
None of these
never
indirectly
seldom
3
What will the following code output?
An asterisk followed by 22
22
An asterisk followed by the address of the number variable
The address of the number variable
4
A pointer can be used as a function argument, giving the function access to original argument.
False
True
5
The ________, also known as the address operator, returns the memory address of a variable.
percent sign (%)
ampersand ( & )
asterisk ( * )
exclamation point ( ! )
6
What is the value of *sum after the statements?
6
address of variable sum
7
9
7
________ can be used as pointers.
Array names
Punctuation marks
All of these
Numeric constants
8
Every byte in the computer's memory is assigned a unique ________.
address
dynamic allocation
name
pointer
9
After this code executes, which of the following statements is true?
ptr will hold the address of numbers[1].
This code will not compile.
ptr will hold the address of numbers[2].
ptr will hold the address of numbers[0].
10
The statement int *ptr = new int;
assigns an integer less than 32767 to the variable named ptr
creates a new pointer named int
results in a compiler error
assigns an address to the variable named ptr
11
The contents of pointer variables may be changed with mathematical statements that perform ___.
multiplication and division
all mathematical operations that are legal in C++
addition and subtraction
B and C
12
What will the following code output?
1
3
0
2
13
What will the following statement output? cout << &num1;
The number 1
The memory address of the variable called num1
The string "&num1"
The value stored in the variable called num1
14
Which of the following statements is not valid C++ code?
int ptr = &num1;
float num1 = &ptr2;
All of these are invalid.
int ptr = int *num1;
15
When you work with a dereferenced pointer, you are actually working with ________.
the actual value of the "pointed" variable
a copy of the value pointed to by the pointer variable
a variable whose memory has been allocated
16
What does the following statement do? double *num2;
Initializes a variable named *num2.
Declares a double variable named num2.
Declares a pointer variable named num2.
Declares and initializes an pointer variable named num2.