Errata—Computing Fundamentals with C++, first printing
The author’s web page for this textbook is http://www.cs.arizona.edu/people/mercer/compfun2/
Chapter 2
page 63 First dialogue in Project 2H has changed in the following way:
Wholesale price = 133.333
page 63 Second dialogue in Project 2H has changed in the following way:
Wholesale price = 100
Chapter 3
page 84 The seventh line in the code should be changed to the following:
int totalMinutes, minutes, hours;
Chapter 4
page 126 Class
diagram for grid
should include a putDown()
member function
page 133 Object-Oriented program in Figure 4.2 has changed in the following way:
eighty8() should be ninety()
hundred() should be ninety9()
page 144 Second grid in Project 4J should be changed to the following:
. .
. . . . . . . . . . . . . . . . . . . . .
.
. . . . .
. .
#
# # #
# > .
. . . . . . . . . . . . . . . . . . . . . . .
Chapter 5
page 159 The ninth line in the code in Self-Check 5-8 should be changed to the following:
void
f2(double c)
page 159 The third line from the bottom in the code in Self-Check 5-8 should be changed to the following:
int e;
page 166 The first line of code under the first bullet should be changed to the following:
double
f2(double x)
page 168 The second and third lines of code in Project 5D should be deleted so that the beginning looks like the following:
#include
"grid" // For the grid
class
grid
moveThree(grid g)
page 169 The second and third lines of code in Project 5E should be deleted so that the beginning looks like the following:
#include
"grid" // For the grid
class
grid
blockThree(grid g)
page 169 The last line of code on the page should be changed to the following:
cout << round(9.999999, 4) <<
endl; // 10
Chapter 6
page 205 The class definition should be changed to the following:
class
room {
public:
//--constructors
room();
room(string initName);
//--modifiers
void set_desiredTemp(int newTemp);
//--accessors
int get_desiredTemp() const;
// post: Return des. temp. setting
int get_actualTemp() const;
// post: Return current room temp.
int isOccupied() const;
// post: Return 1 if someone is in the room
and 0 if no one is present
private:
string my_roomName;
int my_desiredTempSetting;
actualTempDevice my_actDev;
desiredTempDevice my_desDev;
occupancySensorDevice my_occDev;
};
page 205 The second and third lines in the class diagram should be changed to the following:
int
get_desiredTemp()
int
get_actualTemp()
page 206 Exercise 8 should be changed to the following:
Set the desired temperature to 70 degrees Fahrenheit in the kitchen.
page 206 In Exercises 9 and 10, room should be kitchen
page 206 In class definition and class diagram, dispenseCash() should be dispenseCash(int)
page 220 Sentence in the middle of the page should be changed to the following:
On the other hand, the attempt to send nonconst messages such as grid::move results in a compiletime error like these (more cryptic errors exist):
page 226 Exercises 29 and 30 should be deleted
Chapter 7
page 256 The code in the middle of the page should be changed to the following:
int
main()
{ //
Test drive the "safe" bankAccount::withdraw
bankAccount aSafeAccount("Krista
Guido", 50.00);
double withdrawalAmount;
page 263 In the code for Project 7C, the following line should be inserted between lines 2 and 3 at the top of the page:
#include
<cmath>
page 263 In the code for Project 7C, line 14 should be changed to the following:
cout << "Enter a, b, and c like
this: 1.0 0.0 -1.0 ";
page 266 The eighth line of code in Project 7G should be changed to the following:
libraryBook aBook("The Mythical Man Month", "Fred Brooks");
page 267 The first line of code for Step 1 in Project 7H should be changed to the following:
bankAccount
anAcct("Larry", 200.00);
page 268 The ninth line of code for Step 4 in Project 7H should be changed to the following:
bankAccount anAcct("Larry", 200.00);
page 269 The following line should be inserted before the last line of code at the bottom of the page:
return 0;
page 282 The two sets of output under Exercise 16 on this page should be labeled a. and d.
page 283 The two sets of output on the left at the top of the page should be labeled b. and c., so that it looks like the following:
b. ...... e. ......
c. ...... f. ......
page 283 Exercise 19 should be changed to the following:
Write a function that returns the smallest of three numbers. Develop a test plan to completely test your program.
page 290 The fifth line of code on this page for Project 7M should be the following:
// post: Initialize a student object with a name as "?name?", 0.0 credits,
page 290 The ninth line of code on this page for Project 7M should be the following:
// student("Delaisio, Donna", 30.0, 120.0);
page 291 In the code at the top of the page, the two double statements should be in reverse order
Chapter 8
page 318 The following should be inserted before the last line of code at the top of the page:
return 0;
page 323 The code for Exercise 6b should be changed to the following:
j =
1;
while(j
<= 7)
{
cout << "Hello";
j++;
}
page 323 Exercise 7 should be changed to the following:
Write a while loop that produces this output:
page 323 Exercise 8 should be changed to the following:
Write a while loop that displays 100, 95, . . ., 5, 0 on separate lines.
page 328 The output for Project 8D should be formatted like the following:
Annual Monthly Daily
FutureValue: 1060.00 1061.68 1061.83
page 341 The end of the code for Project 8J should be changed to the following:
X
2^X
==
======
4
16.0
5
32.0
6
64.0
7
128.0
8
256.0
9
512.0
10 1024.0
Chapter 9
page 360 The last sentence under Tip 3 should be changed to the following:
In this case, you will need an extra getline to get beyond the end of the line.
Chapter 10
page 365 The seventh line of the code at the top of the page should be changed to the following:
// assert: myFriends has capacity to store
20 strings
page 367 The sixth line of code at the top of the page should be changed to the following:
cout << "x[" << j
<< "]: ";
page 371 The following should be inserted after the first line of code:
#include
<iostream>
page 378 The line of code in the middle of the page should be changed to the following:
account[0]
= bankAccount("Hall", 0.00);
page 378 The last five lines of code on this page should be changed to the following:
account[0]
= bankAccount("Hall", 0.00);
account[1]
= bankAccount("Small", 100.00);
account[2]
= bankAccount("Ewall", 200.00);
account[3]
= bankAccount("Westphall", 300.00);
// assert: The first n elements of account are initialized
page 387 The following should be inserted after the first line of code in Exercise 1:
using
namespace std;
page 388 The following should be inserted at the top of the code in Exercise 6:
#include
<iostream>
page 391 Exericses 15 and 16 should be changed to the following:
Which line(s) contain compiletime errors?
page 397 The output at the top of the page should be changed to the following:
Hall 100.00
Solly 53.45
Kirstein 999.99
. . .
Pantone 8790.56
Brendle 0.00
Kentish 1234.56
page 397 The output at the end of Project 10D should be changed to the following:
Balance
>= 1000.00:
Pantone: 8790.56
Kentish: 1234.56
Balance <
100.00:
Solly: 53.45
Brendle: 0.00
page 403 The fourth line of code from the top of the page should be changed to the following:
vector<vectorElementType> test; // Default vector capacity is 0
page 405 The seven str lines at the top of the pages should have a ; placed at the end of them, like the following:
str[0]
= "ABE"; // first == 0
str[1]
= "CLAY";
page 410 The nine str lines in Exercise 19 should have a ; placed at the end of them, like the following:
str[0]
= "ABE";
str[1]
= "CLAY";
page 410 The 14th line of code in Exercise 19 should be deleted, so that the program looks like the following:
int
first = 0;
int
last = 8;
int
mid;
string
searchString("CLAY");
Chapter 11
page 433 The code on this page for Project 11E should be changed to the following:
//
File name: test11e.cpp
#include
<iostream>
using
namespace std;
typedef
int SET_ELEMENT_TYPE;
#include
"set" // Includes set.h and
set.cpp
int
main()
{ //
Test drive the set class
set aSet;
aSet.remove(99); // Try to remove an element
cout << "size: " <<
aSet.size() << endl;
cout << "capacity: "
<< aSet.capacity() << endl;
aSet.add(7);
aSet.add(9);
page 434 The output for Project 11E should be changed to the following:
size:
0
capacity:
16
size:
3
capacity:
16
The set: 9, 10, 8
Chapter 12
page 473 The text under Project 12A should be changed to the following:
First read the notes above. The bank teller application allows valid bank customers access to their own bank accounts through their customer numbers. Once a customer swipes the bank card and enters the personal identification number (PIN), the user, with the help of a teller, may complete any of the following transactions: withdraw money, deposit money, and query account balance. Customers may also see their own collection of transactions. The system must maintain the correct balances for all accounts and also log each and every successful transaction.
page 473 The last paragraph on the page should be changed to the following:
An administrator is needed to activate new mailboxes and deactivate active mailboxes.
page 474 Project 12D should be deleted
Chapter 13
page 484 In the code, the third line should not end in a semicolon, like the following:
theCdCollection.next())
page 486 The line of code eighth from the bottom of the page should be changed to the following:
for(
theCDs.first(); ! theCDs.isDone(); theCDs.next() )
Chapter 14
page 522 The tenth line of code should be changed to the following:
double n1 = 99.9;
Chapter 15
page 567 The text in orange in the figure should be changed to the following:
"The
source's memory"
page 570 The paragraph at the top of the page should be changed to the following:
The action of the copy constructor guarantees that the destructor does not delete two pointers to the same memory. This is accomplished for the withDestructor class by the allocation of new memory for the pointer data member my_chars.
page 570 The code at the top of the page should be changed to the following:
withDestructor::withDestructor(const
withDestructor & source)
{ //
This copy constructor allocates new memory for my_chars . . .
my_chars = new char[strlen(source.s) + 1];
// . . . and then copies all characters into
the new memory
strcpy(my_chars, source.s);
// This is different from s = source.s;
which only copies an address and leaves two pointer data
// members pointing to the same memory
}
page 570 The first line of code in the middle of the page should be changed to the following:
string::string(const
char* source)
page 578 The title of the figure should be the following:
An Empty List with a Dummy node
page 582 The last lines of code at the bottom of the page should be changed to the following:
{ // Take out the element
prev->structs_next = current->structs_next;
// Move link around
if(current == my_last)
my_last = prev;
delete current; // Deallocate memory
my_size--; // Maintain current size
return true; // Report successful removal
}
}
page 585 The fourth bankAccount line under Exercise 3 should be deleted
page 588 The title of Project 15A should be changed to the following:
char*
toLower(char*)
page 588 The first line of the paragraph under Project 15A should be changed to the following:
Using pointer syntax (and not a string class), write a function called toLower that converts any char* argument into its lowercase equivalent.
page 589 The following line should be inserted after the first line of code under Project 15C:
#include
<cstring> // For strlen
page 590 The following line should be inserted after the first line of code in Project 15D:
#include
<cstring> // For strlen
page 590 The last four lines of code in Project 15D should be changed to the following:
cout << subString(charPtr, 15, 15)
<< endl; // Stop at end
cout << subString(charPtr, 20, 16)
<< endl; // Stop at end
return 0;
}
page 590 The fourth line of output for Project 15D should be changed to the following:
pqrstuvwxyz
page 592 The first two sections of code at the top of the page should be changed to the following:
public:
//--constructor
myArray(int initMax);
// post: Allocate memory for initMax objects
page 592 The first bullet should be changed to the following:
Implement all five member functions of the myArray class. Remember to
page 593 The sixth line of code should be changed to the following:
void
show const(myArray & arrayCopy, int n)
page 593 The last four lines of code should be changed to the following:
cout << a.sub(11) << endl; // Out-of-range error
a.set(-1, -1.1) // Out-of-range error
return 0;
}
page 593 The last three lines of output should be changed to the following:
**Error:
subscript 11 not in range 0..5. Returning first element.
1.1
**Error: subscript -1 not in range 0..5. The array is unchanged.
page 594 Project 15I’s title should be changed to the following:
OrderedList
page 594 The code for Project 15I should be changed to the following:
OrderedList::insert(const
orderedListElementType & newElement)
// post: Place newElement into the list, maintaining ascending order
Chapter 17
page 672 The code for Exercise 2 should be changed to the following:
//
You only need one template class
plus
<int> a(2, 3);
plus
<double> b(2.2, 3.3);
plus
<string> c("Abe", "Lincoln");
a.show(); // 5
b.show(); // 5.5
c.show(); // AbeLincoln
page 674 The paragraph under Project 17B should be changed to the following:
Modify the remove member function of the bag class (stored in the file named genbag) such that it checks to see if some memory can be returned to the free store. When the current number of elements falls below one of the cut-offs (64, 128, 256, 512, 1,024, and so on), return half the current memory back to the free store.
Chapter 18
page 686 The last three lines of code should be changed to the following:
cout << "This program may
bomb!";
return 0;
}
page 691 The fifth line of code should be changed to the following:
#include
"ltcomplx" // For an
author-supplied complex class
page 695 The third line of code in the middle of the page should be changed to the following:
#include
"ltcomplx" // For a lite
complex class
page 700 The third line of code at the bottom of the page should be changed to the following:
#include
"ltcomplx"
page 709 The title of Project 18A should be changed to the following:
Overload < and != for track Objects
page 709 The ninth line of code in Project 18A should be changed to the following:
if(!
(a != b));
page 711 The code at the bottom of the page should be changed to the following:
r1 =
complex( (-b + sqrt(disc)) / (2 * a), 0.0);
r2 =
complex( (-b – sqrt(disc)) / (2 * a), 0.0);
Chapter 19
page 721 The fifth line of code at the bottom of the page should be changed to the following:
void display() const
page 721 The seventh line of code at the bottom of the page should be changed to the following:
void studentStats() const
page 722 The second line of code at the top of the page should be changed to the following:
double average() const
page 723 The first line of code in the middle of the page should be changed to the following:
quizData::quizData(string
filename) const
page 738 The two for lines in the middle section of code should be changed to the following:
for int(row = 0; row < lastRow; row++)
and
for int(col = 0; col < lastCol; col++)
page 741 The third line of code in Exercise 9 should be changed to the following:
matrix<int>
t(nRows, nCols);
page 743 The text for Project 19A should be changed to the following:
Implement and test quizData::average in quizdata.cpp as described on pages 726-727.
page 743 The text for Project 19B should be changed to the following:
Implement and test quizData::quizStats in quizdata.cpp as described on page 727.
page 745 The first sentence in Project 19F should be changed to the following:
A magic square is an n-by-n vector where the intergers 1 to n2 appear exactly once and the sum of the integers in every row, column, and on both diagonals is the same.