Question 1

A pointer is an address,an address is an integer,but a pointer is not an integer.

Accepted Answer

A) True 
 B)False  True

Question 2

Give three uses for the * operator.Name and describe each use.

Accepted Answer

Multiplication: x * y
Pointer definition: int *p;
Pointer dereferencing: int x;x = *p;
Pointer parameter declaration: void foo( int * p);

Question 3

Your program creates a dynamically allocated array as follows:
int *entry;
entry = new int[10];
so that the pointer variable entry is pointing to the dynamically allocated array.Write code to fill this array with 10 numbers typed in at the keyboard.

Accepted Answer

#include using namespace std; int main() { int *entry; entry = new int[10]; cout << "Enter 10 integers: "; for(int i = 0;i < 10;i++) cin >> entry[i]; for(int i = 0;i < 10;i++) cout << entry[i] << " "; cout << endl; return 0; }

Question 4

Why did C++11 introduce the nullptr constant when we already have NULL?

Accepted Answer

nullptr gives us type safety.NULL is use

Question 5

If a class is named MyClass,what must the destructor be named?

Accepted Answer

A) Erase 
B) MyClass 
C) Any name the programmer wishes except the name of the class 
D) ~MyClass 
E) None of the above. 
A) Erase 
B) MyClass 
C) Any name the programmer wishes except the name of the class 
D) ~MyClass 
E) None of the above.

Question 6

Suppose we have the following definitions and assignments:
double *p,v;
p = &v;// p gets the address of v
What is the effect of this assignment?
*p = 99.99

Accepted Answer

The effect

Question 7

Dynamic variables or dynamically allocated variables in C++ are created and destroyed according to the program's needs.

Accepted Answer

A) True 
 B)False

Question 8

It is an error to call the delete operator on a pointer a second time.Consider what happens if there is memory allocated on the free store for a class,a destructor,and initializing constructors have been defined,but no copy constructor was defined.Now suppose a function is called that has call-by-value parameters.Why does the program either die in the middle or give a segmentation fault?

Accepted Answer

An swer:
The call-by-value parameters ca

Question 9

Give the sequence of steps for creating and using a dynamic array.

Accepted Answer

a)define a pointer type for pointers to

Question 10

Pointer variables are just memory addresses and can be assigned to one another without regard to type.

Accepted Answer

A) True 
 B)False

Question 11

There should eventually be a call to the operator delete on a pointer that
points to the memory allocated by each call to new.

Accepted Answer

A) True 
 B)False

Question 12

Given the definitions,
int *p1,*p2;
p1 = new int;
p2 = new int;
You are to compare and contrast the two assignments.
a)p1 = p2;
b)*p1 = *p2

Accepted Answer

a)Makes p1 point to the same p

Question 13

A pointer is a variable that holds the address of some other location in memory.

Accepted Answer

A) True 
 B)False

Question 14

Write a type definition for pointer variables that will point to dynamically allocated arrays whose base type is char.The name of the type will be CharArray.

Accepted Answer

typedef ch

Question 15

In deep copy,pointers are followed and data and the pointer structure are duplicated.

Accepted Answer

A) True 
 B)False

Question 16

An array name is a constant pointer to array base type.

Accepted Answer

A) True 
 B)False

Question 17

Give the output from this code fragment:
int *p1,*p2;
p1 = new int;
p2 = new int;
*p1 = 10;
*p2 = 20;
cout << *p1 << " " << *p2 << endl;
*p1 = *p2;
cout << *p1 << " " << *p2 << endl;
*p1 = 30;
cout << *p1 << " " << *p2 << endl;

Accepted Answer

The answer of Give the output from this code fragment:
int...

Question 18

The default copy constructor and default operator = provide deep copy.

Accepted Answer

A) True 
 B)False

Question 19

You can get a pointer value to initialize a pointer variable from an object of an appropriate type with the "address-of" operator,&.

Accepted Answer

A) True 
 B)False

Question 20

When declaring several pointer variables,there must be one pointer declarator * for each pointer variable.

Accepted Answer

A) True 
 B)False

A pointer is an address,an address is an integer,but a pointer is not an integer.

Give three uses for the * operator.Name and describe each use.

Your program creates a dynamically allocated array as follows: int *entry; entry = new int[10]; so that the pointer variable entry is pointing to the dynamically allocated array.Write code to fill this array with 10 numbers typed in at the keyboard.

Why did C++11 introduce the nullptr constant when we already have NULL?

If a class is named MyClass,what must the destructor be named?

Suppose we have the following definitions and assignments: double p,v; p = &v;// p gets the address of v What is the effect of this assignment? p = 99.99

Dynamic variables or dynamically allocated variables in C++ are created and destroyed according to the program's needs.

Give the sequence of steps for creating and using a dynamic array.

Pointer variables are just memory addresses and can be assigned to one another without regard to type.

There should eventually be a call to the operator delete on a pointer that points to the memory allocated by each call to new.

Given the definitions, int p1,p2; p1 = new int; p2 = new int; You are to compare and contrast the two assignments. a)p1 = p2; b)p1 = p2

A pointer is a variable that holds the address of some other location in memory.

Write a type definition for pointer variables that will point to dynamically allocated arrays whose base type is char.The name of the type will be CharArray.

In deep copy,pointers are followed and data and the pointer structure are duplicated.

An array name is a constant pointer to array base type.

Give the output from this code fragment: int p1,p2; p1 = new int; p2 = new int; p1 = 10; p2 = 20; cout << p1 << " " << p2 << endl; p1 = p2; cout << p1 << " " << p2 << endl; p1 = 30; cout << p1 << " " << *p2 << endl;

The default copy constructor and default operator = provide deep copy.

You can get a pointer value to initialize a pointer variable from an object of an appropriate type with the "address-of" operator,&.

When declaring several pointer variables,there must be one pointer declarator * for each pointer variable.

C++ Basics

Flow of Control

Function Basics

Parameters and Overloading

Arrays

Structures and Classes

Constructors and Other Tools

Operator Overloading,friends,and References

Strings

Separate Compilation and Namespaces

Streams and File IO

Recursion

Inheritance

Polymorphism and Virtual Functions

Templates

Linked Data Structures

Exception Handling

Standard Template Library

Patterns and Uml

Filters

Exam 10: Pointers and Dynamic Arrays

A pointer is an address,an address is an integer,but a pointer is not an integer.

Give three uses for the * operator.Name and describe each use.

Your program creates a dynamically allocated array as follows: int *entry; entry = new int[10]; so that the pointer variable entry is pointing to the dynamically allocated array.Write code to fill this array with 10 numbers typed in at the keyboard.

Why did C++11 introduce the nullptr constant when we already have NULL?

If a class is named MyClass,what must the destructor be named?

Suppose we have the following definitions and assignments: double *p,v; p = &v;// p gets the address of v What is the effect of this assignment? *p = 99.99

Dynamic variables or dynamically allocated variables in C++ are created and destroyed according to the program's needs.

Give the sequence of steps for creating and using a dynamic array.

Pointer variables are just memory addresses and can be assigned to one another without regard to type.

There should eventually be a call to the operator delete on a pointer that points to the memory allocated by each call to new.

Given the definitions, int *p1,*p2; p1 = new int; p2 = new int; You are to compare and contrast the two assignments. a)p1 = p2; b)*p1 = *p2

A pointer is a variable that holds the address of some other location in memory.

Write a type definition for pointer variables that will point to dynamically allocated arrays whose base type is char.The name of the type will be CharArray.

In deep copy,pointers are followed and data and the pointer structure are duplicated.

An array name is a constant pointer to array base type.

Give the output from this code fragment: int *p1,*p2; p1 = new int; p2 = new int; *p1 = 10; *p2 = 20; cout << *p1 << " " << *p2 << endl; *p1 = *p2; cout << *p1 << " " << *p2 << endl; *p1 = 30; cout << *p1 << " " << *p2 << endl;

The default copy constructor and default operator = provide deep copy.

You can get a pointer value to initialize a pointer variable from an object of an appropriate type with the "address-of" operator,&.

When declaring several pointer variables,there must be one pointer declarator * for each pointer variable.

C++ Basics

Flow of Control

Function Basics

Parameters and Overloading

Arrays

Structures and Classes

Constructors and Other Tools

Operator Overloading,friends,and References

Strings

Separate Compilation and Namespaces

Streams and File IO

Recursion

Inheritance

Polymorphism and Virtual Functions

Templates

Linked Data Structures

Exception Handling

Standard Template Library

Patterns and Uml

Filters

Suppose we have the following definitions and assignments: double p,v; p = &v;// p gets the address of v What is the effect of this assignment? p = 99.99

Given the definitions, int p1,p2; p1 = new int; p2 = new int; You are to compare and contrast the two assignments. a)p1 = p2; b)p1 = p2

Give the output from this code fragment: int p1,p2; p1 = new int; p2 = new int; p1 = 10; p2 = 20; cout << p1 << " " << p2 << endl; p1 = p2; cout << p1 << " " << p2 << endl; p1 = 30; cout << p1 << " " << *p2 << endl;