excel® forumlas and functions for dummies® 2nd edition

... tricks, and when you find out how limited and lame printf() and scanf() are, you will probably create your own functions that read the keyboard and display information just the way you like Until ... editors have a search-and-replace command Unfortunately, searching and replacing numbers in a computer program is a dangerous thing to do! Suppose that the number is Searching and replacing it would ... nice and simple Both the same thing: They read characters from the keyboard and save them in a vari­ able gets() reads in only text, however scanf() can read in numeric values and strings and

Ngày tải lên: 12/08/2014, 09:21

... variable and a value It can be a numeric or single-character variable  if cannot compare strings For information on comparing strings, refer to my book C All-in-One Desk Reference For Dummies ... first  The symbols for less than or equal to and greater than or equal to always appear that way: <= and >= Switching them the other way generates an error  The symbol for “not” in C is ... the final result and see how much more clairvoyant the computer genie has become Type 3 and see That number is less than 5! Type 9 and see That number is more than 5! Type 5 and the genie knows:

Ngày tải lên: 12/08/2014, 09:22

... the value received  Functions that take input and produce output: These functions receive something and give you something back in kind (known as generating a value) For example, a function ... shoe size and cough up your weight So to speak Input and output Trang 3 Functions that produce only output: These functions generate a value or string, returning it to the program — for example, ... My advice is to stick with the format used in this book and try not to be alarmed if you see the other format used Older C references may use the second format, and certain fogey C pro­grammers

Ngày tải lên: 12/08/2014, 09:22

... command, 350 cls command, 350 code See source code code blocks, 151 code size, 346 COLOR .C, 51–52 command line,...368 C For Dummies, 2nd Edition You do this step with the GCC command ... subsection for compiling and linking specifics for your oper- ating system. For Macs before OS X, see the reference material that came with your compiler. Making GCC work in Windows Heck, for all ... programs at the command prompt. Anyway. . . . 37 570684 AppA.qxd 3/31/04 2:58 PM Page 366 366 C For Dummies, 2nd Edition Windows compilers aren’t designed to be friendly for command-line compil-

Ngày tải lên: 12/08/2014, 09:22

... requires the firewall to collect and remember information per user over time and must include mechanisms for coordinating the information if multiple fire- walls are used for the same purpose. 78 Part ... together and share the cached results, or they can be independent from each other and just divide the network traffic load between them. ߜ Encryption: Encryption techniques are used first and foremost ... Another method used to improve the performance of Internet requests is using more than one firewall — handy reinforce- ments that provide the same functionality and are set up with the same firewall

Ngày tải lên: 14/08/2014, 02:20

... send all commands between the FTP clientand the FTP server These commands can include FTP-GET and FTP-PUTcommands for the transfer of data In response to an FTP-PUT or FTP-GETcommand, a separate ... can be forwarded to a different DNS server If your DNS server supports conditional forwarding, you must create both a TCP and a UDP firewall rule for each target DNS server The conditional for-warding ... place at the back-end terminalserver, and only screen and input information is sent between the clientand the server Firewalls must be configured to allow both forms ofaccess  Other business protocols:

Ngày tải lên: 14/08/2014, 02:20

... longest to design and deploy, the most effort to administer, andgenerally are the most expensive On the other hand, the most simple solu-tion may be cheap, the easiest to set up and administer, ... internal network forsome protocols, and only allow connections from a screened host for otherprotocols Table 10-1 shows the firewall rules for a dual-homed firewall that allows SMTPand POP3 e-mail ... secure you want your firewall architecture to be and how much cost and effort is associated with realizing this goal.This trade-off is different for different companies A small office or home officehas

Ngày tải lên: 14/08/2014, 02:20

... itself, handle all the details of implementing security protocols and object access enforcement, than it is to make each separate application responsible for handling this complex task. For secure ... collect information for registrations, newsletters, or purchas- ing information. Typically, this information is stored in a database. Figure 12-5 shows a typical DMZ configuration for a Web server ... both the private network and the DMZ use private network address- ing, the packets have the same source IP and port information when they reach the external firewall (but before the packets are transmitted

Ngày tải lên: 14/08/2014, 02:20

... list, right-click on the intruder you want to block and select Block Intruder In the submenu, select For an Hour, For a Day, For a Month, or Forever In the Please Confirm dialog box, click Yes ... ensure that no private information is sent to the Internet without your knowledge For all outgoing Web, instant messaging, and e-mail traffic, the firewall scans for private information about you ... policy settings and branch office administrators who can adjust only a smaller subset of the policy settings ߜ Support for various techniques for user authentication to validate access for users on

Ngày tải lên: 14/08/2014, 02:20

... Edition and the Enterprise Edition, and you begin to wonder, “Which of these editions is right for me?” Because the Enterprise Edition is considerably more expensive than the Standard Edition, ... used and the source and destination IP addresses and ports For more information on DMZs, see Chapters 11 and 12  Application Filters: Packet filters determine what network traffic ISA Server forwards, ... may gain by using the Enterprise Edition The Enterprise Edition can do everything that the Standard Edition does — and more You should con-sider the Enterprise Edition only if you need any of

Ngày tải lên: 14/08/2014, 02:20

... more information about these commands in your operating system’s help system or in a TCP/IP book, such as TCP/IP For Dummies, 5th Edition, by Candace Leiden and Marshall... vendor for technical ... approved for the firewall, and then click Next. 12. On the Key Hit Session page, type random characters until you hear a beep, and then click Next. These random characters are used as the source for ... addresses for incoming packets in FireWall-1. Rather than implement separate NAT and static address mapping functions, FireWall-1 uses the same NAT editor for protecting both inbound and out-

Ngày tải lên: 14/08/2014, 02:20

... application proxy performing, 76–79Check Point FireWall-1 support for,335–336 configuring rules for, 77–79content rating as criteria for, 167–168date and time as criteria for, 168definition of, ... known for This section enables you to get information about and subscribe to a number of mailing lists Some of these mailing lists cover newly discovered rity vulnerabilities and fixes for them ... Check here for the latest information about FireWall-1 www.interhack.net/pubs/fwfaq Newsgroups have been part of the Internet for many years These are forums where people post questions and receive

Ngày tải lên: 14/08/2014, 02:20

... shows guidelines for choosing a file format for images by type File Format Best Used For Watch Out GIF Line art and other images with few colors and less detail Don’t use this format if you have ... best format for less-complex, nonphotographic images, such as line art and clip art Trang 5ports 24-bit color (millions of colors) and complex images, such as tographs JPEG is cross-platform and ... strongly urge you to use CSS for bor-ders, positioning, and alignment for both text and images, and let (X)HTML position-do the job it position-does best: represent and point to actual content

Ngày tải lên: 14/08/2014, 12:20

... the media types and their uses handheld For handheld devices (such as those with a small screen, mono-chrome monitor, and limited bandwidth) but in Print Preview modeprojection For projected presentations, ... footers, body copy, menus, and so forth Each @import references a subsidiary style sheet for one of those various categories for page content This is probably overkill for most small-scale or personal ... shorthand properties, take multiple values, such as margin and padding Shorthand properties lect values from multiple related CSS properties (such as margin-height, margin-width, and so forth)

Ngày tải lên: 14/08/2014, 12:20

... concepts and techniques for creating dynamic HTML (sometimes called DHTML) and using client-side JavaScripts and pre- fabricated code to perform basic tasks, such as displaying date and time information, ... JavaScript)... and how it works, please check out JavaScript For Dummies, 5th Edition, by Emily Vander Veer, for more information and to dive a little deeper into the JavaScript language ... Over Web Pages and Styles Syntax for changing capitalization This style declaration uses the text-transform property: selector {text-transform: value;} The value of the text-transform property

Ngày tải lên: 14/08/2014, 12:20

... creates a form that uses the post method to send user-entered information to a form handler (guestbook.php) to be pro- cessed on the Web server. Listing 14-1: A Simple Form Processed by a Form Handler ... collect name and value information that the user can’t see along with the rest of the form data. Hidden fields are useful for keeping track of information associated with the form, such as ... hidden, and more. Not all fields require values for name and type attributes (for example, text box or password fields), but it’s a good idea to provide users with explanatory labels and examples

Ngày tải lên: 14/08/2014, 12:20

... for nontechnical users to add, edit, and (wait for it ) manage a Web site A CMS is like a Web site on steroids: bigger, stronger, and with more abilities However, a CMS might be overkill for ... XHTML, and CSS, and eventu-ally graduate to their very own CMS Web site, whereas others jump directly into CMS and move ahead from there It really just depends on what makes you comfortable and ... HTML-Only and CMS-Based Web Sites ComparedEdit anywhere using a Web browser and an Internet link Edit local files and upload to a Web server HTML, XHTML, and CSS knowledge not required, but helpful for

Ngày tải lên: 14/08/2014, 12:20

... handling for forms (overrides method attribute for the form element) ✓ formnovalidate (input, button) — identifies special handling for forms (overrides novalidate attribute for the form element) ... the form element) ✓ formenctype (input, button) — identifies special handling for forms (overrides enctype attribute for the form element) ✓ formmethod (input, button) — identifies special handling ... descriptions and use two-letter codes to describe their standardization status CR stands for Candidate Recommendation, meaning the module is nearing standardization; LC stands for Last Call (for

Ngày tải lên: 14/08/2014, 12:20

... you go shopping for items for your HTML toolbox, look for good buys Students and educators often qualify for big discounts on major-brand ware, if they use a search engine to look for “educational ... features; color coding and tag completion for HTML and XML; multi-file search and replace; and support for Web-related languages, such as Perl, Python, Tcl, PHP, JavaScript, and much more • Komodo ... occasionally, and hack out most of your markup by hand, do a spell check before posting your documents to the Web (For a handy illustration of why this step matters, keep a log of spelling and grammatical

Ngày tải lên: 14/08/2014, 12:20