C++ For Dummies ® , 5th Edition Published by Wiley Publishing, Inc.. 111 River Street Hoboken, NJ 07030-5774 Copyright © 2004 by Wiley Publishing, Inc., Indianapolis, Indiana Published
Trang 2C++
FOR
Trang 4DUMmIES
Trang 5C++ For Dummies ® , 5th Edition
Published by
Wiley Publishing, Inc
111 River Street Hoboken, NJ 07030-5774 Copyright © 2004 by Wiley Publishing, Inc., Indianapolis, Indiana Published by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada
No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form
or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600 Requests to the Publisher for permission should be addressed to the Legal Department, Wiley Publishing, Inc., 10475 Crosspoint Blvd., Indianapolis, IN 46256, (317) 572-3447, fax (317) 572-4447, e-mail: permcoordinator@wiley.com
Trademarks: Wiley, the Wiley Publishing logo, For Dummies, the Dummies Man logo, A Reference for the
Rest of Us!, The Dummies Way, Dummies Daily, The Fun and Easy Way, Dummies.com, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc and/or its affiliates in the United States and other countries, and may not be used without written permission All other trademarks are the property of their respective owners Wiley Publishing, Inc., is not associated with any product or vendor mentioned in this book
LIMIT OF LIABILITY/DISCLAIMER OF WARRANTY: THE PUBLISHER AND THE AUTHOR MAKE NO REP RESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS WORK AND SPECIFICALLY DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE NO WARRANTY MAY BE CRE ATED OR EXTENDED BY SALES OR PROMOTIONAL MATERIALS THE ADVICE AND STRATEGIES CON TAINED HEREIN MAY NOT BE SUITABLE FOR EVERY SITUATION THIS WORK IS SOLD WITH THE UNDERSTANDING THAT THE PUBLISHER IS NOT ENGAGED IN RENDERING LEGAL, ACCOUNTING, OR OTHER PROFESSIONAL SERVICES IF PROFESSIONAL ASSISTANCE IS REQUIRED, THE SERVICES OF A COMPETENT PROFESSIONAL PERSON SHOULD BE SOUGHT NEITHER THE PUBLISHER NOR THE AUTHOR SHALL BE LIABLE FOR DAMAGES ARISING HEREFROM THE FACT THAT AN ORGANIZATION
OR WEBSITE IS REFERRED TO IN THIS WORK AS A CITATION AND/OR A POTENTIAL SOURCE OF FUR THER INFORMATION DOES NOT MEAN THAT THE AUTHOR OR THE PUBLISHER ENDORSES THE INFOR MATION THE ORGANIZATION OR WEBSITE MAY PROVIDE OR RECOMMENDATIONS IT MAY MAKE FURTHER, READERS SHOULD BE AWARE THAT INTERNET WEBSITES LISTED IN THIS WORK MAY HAVE CHANGED OR DISAPPEARED BETWEEN WHEN THIS WORK WAS WRITTEN AND WHEN IT IS READ
For general information on our other products and services or to obtain technical support, please contact our Customer Care Department within the U.S at 800-762-2974, outside the U.S at 317-572-3993, or fax 317-572-4002
Wiley also publishes its books in a variety of electronic formats Some content that appears in print may not be available in electronic books
Library of Congress Control Number: 2004102365 ISBN: 0-7645-6852-3
Manufactured in the United States of America
10 9 8 7 6 5 4 3 2 1 5B/SW/QU/QU/IN
Trang 6417
starting Dev-C++, 17 statement, executing single
See
single-stepping statements, basing programs on, 23–24 static objects
complex data member, constructing, 228–232 constant data member, constructing, 232–233 data, referencing, 253–255 functions, declaring,
234–235 protecting, 204 reasons for using, 251–252
this keyword, 258 using, 252–253 static variable, 91, 233 STL (Standard Template
Library) See template
library storing Dev-C++, 14 logical values with simple operators, 49–51 results of expressions, 26 stream I/O
endl, terminating with,
322
fstream subclasses,
320–322 subclasses (strstream), 322–325
string arrays, manipulating with characters, 103–106 characters, arrays of, 101–103
container, template library, 364–366
expanding pointer variables to, 129–131 length of, 153
manipulation, justifying,
131 variable, described, 33, 34 variables, 106–108
students, sample programs about
courses, associating, 170–177, 182 GPA, 186–192, 193 graduate school, 263–268,
tuition calculation, 269–275
style, importance of clear and consistent, 379 subclass
abstract classes, 287–289 constructing, 265–266 described, 159 destructing, 267 stream I/O (strstream), 322–325
using, 265 subscripts, 55
switch statement, 74–75, 135 syntax, defined, 10 system requirements back-of-the-book CD, 393
• T •
tab character (‘t’), 35, 385–386
tail pointer, 196
“tell me your address”
pointer operator (&), 111–113
temperature conversion sample program, 17–21, 26
template library container classes objects linked to, 200
described, 363 iterators, 368–370
list containers, 366–368 maps, 371–374
sort() method, 371 string container, 364–366 templates
BUDGET4, BC31–BC37 BUDGET5, BC37–BC44 classes, 355–361 function, generalizing
maximum()
temporary object avoiding, 249–250 described, 248–249 referential argument, referring to, 250 terminator
character string to, returning (getline()), 320–321
endl, 322 newline character (‘n’),
322 null terminated array, 129 string, 103
test program, running debugger, 148–149 text editor, entering instructions with, 17–18 text, string displaying, 364–366
this keyword, 258
throw keyword, 335–337
true/false See boolean
variable (bool) truncation problem integers (int variable), 29–30
solving, 30–31 try block, 332–335 typing errors, 20
Trang 7418 C++ For Dummies, 5th Edition
• U •
unary mathematical operators, 43–44 unary operator (+), 40 Unix, origins of, 10 unwinding the stack, 332 user-defined objects operators, 306, 307 prompting for, 199 references, passing, 191–192
value container for, 24 passing pointers to functions by, 117–118
variable See also array;
pointer functions returning, 84 mixing in functions, 89 scope, limiting, 120–121 storage types,
functions, 91
variable declaring See
declaring variables variable size, 109–110 vector, 355
virtual inheritance, 346–348 virtual member functions described, 269–272 exception to identical declaration rule, 276
limitations, 277–278 polymorphism, 272–276 visibility, limiting access to class internals, 379–381 Visual C++.NET (Microsoft)
debugger commands,
compatibility with, 12 managed mode, 119, 123 new program project,
project, building, BC45–BC47
void return type of function, 84
warnings See error
messages while condition is true (while loop), 64–65 whitespace, 24
whole numbers See
integers (int variable) width parameter stream manipulator, 327
Windows 98 For Dummies
(Rathbone), 393
Windows 2000 Professional For Dummies
(Rathbone), 393 Windows (Microsoft)
CD, back-of-the-book, 394–395
Dev-C++ development and, 12, 21
program arguments, accessing, 137–138 versions other than 9x and ME (Win32), BC46 WRITE debugging
technique average, ridiculous value for, 143–146
divide by zero problem, 142–143
limitations, 146–147 writing
declarations, 24–25 functions, 79–83 program, 11–12
XOR bitwise operator (^),
56, 58
zero division error, 142–143
as non-pointer, 196 string terminated by, 103