practical c programming third edition pdf

... (GTK_WINDOW(main_window),GTK_DIALOG_DESTROY_WITH_PARENT,GTK_MESSAGE_ERROR, app: app_mysql.c callbacks.c interface.c main.c app_gnome.h app_mysql.h gcc o app I/usr/include/mysql app_mysql.c callbacks.c interface.c main.c lmysqlclient `pkg-config —cflags —libs libgnome-2.0 ... hbox->addWidget(cancel_pushbutton); connect (ok_pushbutton, SIGNAL(clicked()), this, SLOT(accept())); connect (cancel_pushbutton, SIGNAL(clicked()), this, SLOT(reject())); Trang 34// user clicked ‘Cancel’ ... “mydialog”); connect (ok_pushbutton, SIGNAL(clicked()), this, SLOT(OkClicked())); connect (cancel_pushbutton, SIGNAL(clicked()), this, SLOT(CancelClicked()));} MyDialog::OkClicked(){ //Do some processing}

Ngày tải lên: 09/08/2014, 14:21

... The traced commands are preceded by plus signs. $ x=* $ set -x Set command trace option $ echo $x + echo add greetings lu rem rolo add greetings lu rem rolo $ cmd=wc + cmd=wc $ ls | $cmd -l + ... Oct 2 15:05:42... Logic Corp.:Box 174 :Hackensack, NJ 076 02" $ IFS=: $ set $line $ echo $# How many parameters were set? 3 $ for field; do echo $field; done Micro Logic Corp Box 174 Hackensack, ... the newline character. The next character is another newline; this was written by the echo. These characters for IFS come as no surprise; they're the "whitespace" characters we've

Ngày tải lên: 13/08/2014, 15:21

... will never be more than one character of pushback Modify getchandungetchaccordingly Exercise 4-9 Our getch and ungetch do not handle a pushed-back EOF correctly Decidewhat their properties ought ... characters plus the terminating'\0'). 4.10 Recursion C functions may be used recursively; that is, a function may call itself either directly orindirectly Consider printing a number as a character ... thegetch-ungetchcombination, which must be external so they can be shared, yet which should not be visible to users ofgetchandungetch Static storage is specified by prefixing the normal declaration

Ngày tải lên: 06/08/2014, 09:20

... Streams and File Descriptors 11 7 11 8 File and Directory Maintenance 11 8 chmod chown x 11 8 11 9 Contents unlink, link, and symlink mkdir and rmdir chdir and getcwd Scanning Directories opendir ... 223 223 225 226 227 Try It Out—-Colors Redefining Colors Pads 229 230 230 Try It Out—Using a Pad The CD Collection Application Try It Out—A New CD Collection Application... 509 509 510 510 511 ... 19 0 19 1 19 1 19 2 19 5 19 8 200 200 202 204 204 Contents Chapter 6: Managing Text-Based Screens with curses Compiling with curses Concepts Try It Out—A Simple... 94 95 96 96 97 98 10 0

Ngày tải lên: 09/08/2014, 14:21

... these scripts in conjunction with the dot command, as in the fol- lowing sample session: $ . ./classic_set classic> echo $version classic classic> . latest_set latest version> echo $version ... dot command works a little like the #include directive in C or C++. Though it doesn’t literally include the script, it does execute the command in the current context, so you can use it to incor- ... It’s always good practice to supply an exit code. In shell script programming, exit code 0 is success and codes 1 through 125 inclusive are error codes that can be used by scripts. The remaining

Ngày tải lên: 09/08/2014, 14:21

... 1))selected_row = 0; elseselected_row++; }selected = *choices[selected_row]; draw_menu(choices, selected_row, start_screenrow, start_screencol); key = getch(); }keypad(stdscr, FALSE); nocbreak(); echo(); ... directory const char *title_file = “title.cdb”; const char *tracks_file = “tracks.cdb”; const char *temp_file = “cdb.tmp”; 4. Now, finally, we get on to the function prototypes. void clear_all_screen(void); ... make selections from the menu until we select quit.int main() {int choice; initscr(); do {choice = getchoice(“Options:”, current_cd[0] ? extended_menu : main_menu); switch (choice) {case ‘q’:

Ngày tải lên: 09/08/2014, 14:21

... which contain additional code tocheck on allocations and deallocations to try to cater for the cases where a block is freed twice and someother types of misuse ElectricFence The ElectricFence ... sourcefile ctags -x sourcefile sourcefile By default, ctagscreates a file, called tags, in the current directory, which contains, for each functiondeclared in any of the input source files, lines ... efence efence.c -lefence $ gdb efence (gdb) run Starting program: /home/neil/BLP3/chapter10/efence [New Thread 1024 (LWP 1869)] Electric Fence 2.2.0 Copyright (C) 1987-1999 Bruce Perens <bruce@perens.com>

Ngày tải lên: 09/08/2014, 14:21

... interested, you can simply pass NULL If cancel requests areaccepted, there is a second level of control the thread can take, the cancel type, which is set with pthread_setcanceltype Trang 8#include <pthread.h>int ... that it be canceled On thereceiving end of the cancel request, things are slightly more complicated, but not much A thread can setits cancel state using pthread_setcancelstate #include <pthread.h> ... pthread_setcanceltype(int type, int *oldtype); The type can take one of two values, PTHREAD_CANCEL_ASYNCHRONOUS, which causes cancellationrequests to be acted upon immediately, and PTHREAD_CANCEL_DEFERRED,

Ngày tải lên: 09/08/2014, 14:21

... for incoming connections. The server can accept them using the system call accept. When the server calls accept, a new socket is created that is distinct from the named socket. This new socket ... a connection. client_len = sizeof(client_address); client_sockfd = accept(server_sockfd, (struct sockaddr *)&client_address, &client_len); 6. Read and write to client on client_sockfd. ... introduced a new communication tool, the socket interface, which is an extension of the concept of a pipe, which we covered in Chapter 13. Socket interfaces are avail- able on Linux. You can use sockets

Ngày tải lên: 09/08/2014, 14:21

... Process bash (pid: 390, process nr: 32, stackpage=c5f17000)Stack: c5f17f84 c64e859c c64e859c fffffffe c012dfaf c64e8550 c64e9c20c5f17f84 00000000 c60dd004 00000001 c012e17a c64e9620 c5f17f84c60dd000 ... c64e8550 c64e9c20 c5f17f84 00000000 c60dd004 00000001 c012e17a c64e9620 c5f17f84c60dd000 c60dd000 c5f16000 bffff6b0 c60dd002 00000002 000006b3c012e26c c60dd000 c64e9620 Call Trace: [<c012dfaf>] ... c64e8550esi: c64e9c20 edi: c5f17f84 ebp: 00000000 esp: c5f17f3cds: 0018 es: 0018 ss: 0018 Process bash (pid: 390, process nr: 32, stackpage=c5f17000)Stack: c5f17f84 c64e859c c64e859c fffffffe c012dfaf c64e8550

Ngày tải lên: 09/08/2014, 14:21

... The shift Command Exercises Chapter 8 Decisions, Decisions Exit Status The test Command The else Construct The exit Command The elif Construct The case Command The Null Command : The ... to access a file from anotherdirectory, you can either first issue a command to "change" to the appropriate directory and thenaccess the particular file, or you can specify the particular ... verifies that steve's current working directory is /users/steve Changing Directories: The cd Command You can change your current working directory by using the cd command This command takes as itsargument

Ngày tải lên: 13/08/2014, 15:21

... where each argument starts and ends These characters are collectively called whitespace characters, and are the space character, the horizontal tab character, and the end-of-line character, known ... followed specified that alloccurrences of the character p, followed by any single character, followed by the character o were to be replaced by the characters XXX When the caret character ^ is ... shell scans the command line looking for redirection characters, it also looks for the pipecharacter | For each such character that it finds, it connects the standard output from the commandpreceding

Ngày tải lên: 13/08/2014, 15:21

... characters of each line of /etc/passwd up to the colon are the username). This can't be done directly through an option to uniq, but can be accomplished indirectly by using cut to extract ... except that each output line gets preceded by a count of the number of times the line occurred in the input. $ sort names | uniq –c Count line occurrences 1 Charlie 1 Emanuel 1 Fred 1 Lucy ... single character * to x This means that the shell did the filename substitution when executing the echo command In fact, the precise sequence of steps that occurred when echo $x was executed

Ngày tải lên: 13/08/2014, 15:21

... command substitution.) Trang 12 Chapter 8 Decisions, Decisions IN THIS CHAPTER Exit Status The test Command The else Construct The exit Command The elif Construct The case Command The Null Command ... aesthetic reasons only (tab characters are usually used for such purposes because it'seasier to type a tab character than an equivalent number of spaces) In this case, just a single command is enclosed ... between then and fi areexecuted; in this case, the single echo command is executed If the exit status is nonzero, the echocommand is skipped It's good programming practice to enclose shell variables

Ngày tải lên: 13/08/2014, 15:21

... errorcondition or the end of processing is detected: Here the while loop will continue to execute the getcmd and processcmd programs until cmd is equal to quit At that point, the break command ... status.The case command then matches the character t stored inside option The code associated withthat case copies the value of 600 that was stored in OPTARG into the variable interval The third time ... executing after you've logged off, you can run it with the nohup command, or schedule it to run with at or from the cron Consult your Unix User's Manual for more details. Because mon only checks

Ngày tải lên: 13/08/2014, 15:21

... modified to include the database bin directory, and the CDPATH variable is set tosearch the current directory, the HOME directory, and the RPTS directory (which presumably containssubdirectories).After ... shell built-in command CDPATH The CDPATH variable works like the PATH variable: It specifies a list of directories to be searched bythe shell whenever you execute a cd command This search is done ... Your Current Directory Your current directory is also part of your environment Take a look at this small shell program calledcdtest: Trang 33is altered There is no way to change the current directory

Ngày tải lên: 13/08/2014, 15:21

... now the current character To add characters to the command line, you can use the i and a commands The i command inserts characters before the current character, and the a command adds characters ... either control characters—that is, characters typed in by holding down the Ctrl key and pressing another character—or they are characters preceded by the ESCAPE or Esc key You may enter emacs commands ... basic line edit commands Table 15.2 Basic emacs Line Edit Commands Ctrl+b Move left one character Ctrl+f Move right one character Esc+f Move forward one word Trang 32Command MeaningEsc+b Move back

Ngày tải lên: 13/08/2014, 15:21

... generic cc compiler or the Free Software Foundation’s gcc compiler. For MS-DOS/Windows users, instructions are included for Borland C+ +, Turbo C+ +, and Microsoft Visual C+ +. (These compilers compile ... programming. Notes on the Third Edition The C language has evolved since the first edition of Practical C Programming was published. Back then, ANSI compilers were rare and compilers that accepted the K&R ... they are introduced. Italic is also used to highlight comments in examples. Practical C Programming xv Preface This book is devoted to practical C programming. C is currently the premier language...

Ngày tải lên: 14/02/2014, 20:20

... Turbo C+ + under MS-DOS Borland International makes a low-cost MS-DOS C+ + compiler called Turbo C+ +. This compiler will compile both C and C+ + code. We will describe only how to compile C code. ... their offerings is a C compiler called gcc. To compile a program using the gcc compiler use the following command line: % gcc -g -Wall -ohello hello .c The additional switch -Wall turns on the ... is: C: > bcc -ml -v -N -P -w -ehello hello .c The command-line options are the same for both Turbo C+ + and Borland C+ +. 2.3.3.5 Microsoft Visual C+ + Microsoft Visual C+ + is another C+ + /C compiler...

Ngày tải lên: 12/12/2013, 22:15

... Foundation's gcc compiler. For MS-DOS/Windows users, instructions are included for Borland C+ +, Turbo C+ +, and Microsoft Visual C+ +. (These compilers compile both C and C+ + code.) The book ... and Functions Scope and Class Functions Functions with No Parameters Structured Programming Recursion Answers Programming Exercises 10. C Preprocessor #define Statement Conditional ... Organized Chapter by Chapter Notes on the Third Edition Font Conventions Obtaining Source Code Comments and Questions Acknowledgments Acknowledgments to the Third Edition I. Basics 1....

Ngày tải lên: 12/12/2013, 22:15