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Exam 12: Pointers, Classes, Virtual Functions, Abstract Classes, and Lists

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Question 1

Multiple Choice

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Which of the following operations is allowed on pointer variables?

A) exp
B) %
C) ==
D) /

E) A) and D)
F) A) and C)

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Question 2

Multiple Choice

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In a(n) ____ copy,two or more pointers have their own data.

A) shallow
B) deep
C) static
D) dynamic

E) A) and D)
F) B) and C)

Correct Answer

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B

Question 3

Multiple Choice

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What is the output of the following code? int *p; Int x; x = 12; p = &x; cout << x << ","; *p = 81; Cout << *p << endl;

The code int *p; declares p to be a(n) ____ variable.

The dereferencing operator is also known as the indirection operator and refers to the object to which its operand points.

Consider the following statements: void pointerParameters(int* &p,double *q) { . . . } In the function pointerParameters,the parameter p is a(n)____________________ parameter.

A memory leak is an unused memory space that cannot be allocated.

A pointer variable is a variable whose content is a memory address.

Once a class contains one or more pure virtual functions,then that class is called a(n)____________________ class.

Consider the following statements: void pointerParameters(int* &p,double *q) { . . . } In the function pointerParameters,the parameter q is a(n)____________________ parameter.

If p is a pointer variable,the statement p = p + 1; is valid in C++.

Given the declaration int *p; The statement p = new int[50]; dynamically allocates an array of 50 components of type int and p contains the base address of the array.

Consider the following statements: int x; int &y = x; The second statement declares y to be a(n)____________________ of x.

In the statement int* p,q; p and q are pointer variables.

In C++,you declare a pointer variable by using the ____ symbol.

In C++,the dot operator has a lower precedence than the dereferencing operator.

The ____________________ of a base class automatically makes the destructor of a derived class virtual.

Which of the following can be used to initialize a pointer variable?

In C++,____ is called the address of operator.

The ____ operator can be used to return the address of a private data member of a class.