programming in ansi c by balagurusamy fifth edition

... with another Macrelated title, Beginning AppleScript (Wiley, 2004) About the Technical Reviewers Michael Trent has been programming in Objective -C since 1997—and programming Macs since well before ... Object-oriented programming (Computer science) Macintosh (Computer) Programming I Title QA76.73.O115K63 2009 005.1'17 dc22 2008049771 Printed in the United States of America First Printing December ... computers since the introduction of the first Mac in 1984, and he wrote Programming C for the Mac as part of the Apple Press Library In 2003 Kochan wrote Programming in Objective -C (Sams, 2003),

Ngày tải lên: 12/08/2014, 23:22

... an infinite number of 3s But the calculator can hold only so many digits, thus the inherent inaccuracy of the machine.The same type of inaccuracy applies here: Certain floating-point values cannot ... single character enclosed in single quotes, with a C- style character string, which is any number of characters enclosed in double quotes.As mentioned in the last chapter, a string of characters enclosed ... Objective -C compiler treats the character ’\n’ as a single character, even though it is actually formed by two characters Other special characters are initiated with the backslash character See

Ngày tải lên: 12/08/2014, 23:22

... the x-coordinate of the rectangle’s origin. In a similar manner, the fol- lowing expression retrieves the y-coordinate of the rectangle’s origin: myRect.origin.y Classes Owning Their Objects Can ... alloc] init]; ClassA *a = [[ClassA alloc] init]; ClassB *b = [[ClassB alloc] init]; [a initVar]; // uses ClassA method [a printVar]; // reveal value of x; [b initVar]; // use overriding ClassB ... allocated in the program, including the XYPoint object that setOrigin: creates: [myRect release]; [myPoint release]; One issue remains: If you set the origin of a single Rectangle object to

Ngày tải lên: 12/08/2014, 23:22

... !defined(NS_INLINE) #if defined( GNUC ) #define NS_INLINE static #elif defined( MWERKS ) || #define NS_INLINE static #elif defined(_MSC_VER) #define NS_INLINE static #elif defined( WIN32 ) #define NS_INLINE ... classless.Any class can con- form to the Drawing protocol, not just subclasses of GraphicObject. You can check to see whether an object conforms to a protocol by using the conformsToProtocol: method. ... method. (Chapter 18,“Copying Objects,” covers the topic of copying objects in detail.) Here’s how the NSCopying protocol is defined in the standard Foundation header file NSObject.h: @protocol NSCopying

Ngày tải lên: 12/08/2014, 23:22

... null character, inside corresponding... unusual constructs in the Objective -C programming language is the union.This construct is used mainly in more advanced programming applications ... [[NSAutoreleasePool alloc] init]; void copyString (char *to, char *from); char string1[] = “A string to be copied.”; char string2[50]; copyString (string2, string1); NSLog (@”%s”, string2); copyString... in the ... character string is used in Objective -C, a pointer to that character string is produced This point might sound a bit confusing now, but, as we briefly noted in Chapter 4, constant character

Ngày tải lên: 12/08/2014, 23:22

... respect to the Rectangle class owning its origin object in Chapter 8,“Inheritance.” Defining the two methods in the following way would also be an incorrect approach because the AddressCard ... NSString *dEmail = @”jbaker@kochan-wood.com”; AddressCard *card1 = [[AddressCard alloc] init]; AddressCard *card2 = [[AddressCard alloc] init]; AddressCard... exists Set Objects A set is a collection ... 37@ axlc.com”; NSString *bName = @”Tony Iannino”; NSString *bEmail = @”tony.iannino@techfitness.com”; NSString *cName = @”Stephen Kochan”; NSString *cEmail = @”steve@kochan-wood.com”; NSString *dName

Ngày tải lên: 12/08/2014, 23:22

... running application can reference an object that you create in several places; an object also can be stored in an array or refer- enced by an instance variable someplace else, for example.You can’t ... this case, the object referenced by myInt can become invalid after the removeObjectAtIndex: method is invoked if its reference count is decremented to 0. The solution here, of course, is to retain ... decrementing its reference count.This implies that the following code se- quence could lead to trouble: myInt = [myArr ObjectAtIndex: 0]; [myArr removeObjectAtIndex: 0] That’s because, in

Ngày tải lên: 12/08/2014, 23:22

... shown in Figure 21.11. You can now close the Colors window. You create new objects in your iPhone interface window by click-dragging an object from the Library window into your iPhone window. Click-drag ... http://www.simpopdf.com 467 Your First iPhone Application Designing the Interface In Figure 21.4, and in your Xcode main window, notice a file called MainWindow.xib.An xib file contains all the information ... Writing iPhone Applications @property (nonatomic, retain) UIWindow *window; @property (nonatomic, retain) Fraction_CalculatorViewController *viewController; @end The UIWindow instance variable window

Ngày tải lên: 12/08/2014, 23:22

... @protected By instance methods in the class, instance methods in subclasses, and instance methods in category extensions to the class This is the default @private By instance methods in the class ... interface declaration for a class called Point containing four instance variables: @interface Point: NSObject { @private int internalID; @protected float x; float y; @public BOOL valid; } The internalID ... function call with the actual code for the function itself, thus providing for faster execution.An example is shown here: inline int min (int a, int b) {... contain the converted floating-point

Ngày tải lên: 12/08/2014, 23:22

... False  Change the color of text in a control by changing its ForeColor property You can use the color constants to change colors during run time Using Radio Buttons for Selecting Colors Changing ... and click on the next control You can keep the Ctrl or Shift key down and continue clicking on controls you wish to select Ctrl–click (or Shift–click) on a control a second time to deselect it ... guidelines for colors, control size and placement, access keys, default and Cancel buttons, and tab order Defining Keyboard Access Keys    Review Question  Define keyboard access keys by including

Ngày tải lên: 01/03/2019, 09:37

... operate by defining access keys, setting an Accept and a Cancel button, controlling the tab sequence, resetting the focus during program execution, and causing ToolTips to appear 51 (p 82) Setting ... understand and operate by defining access keys, setting an Accept and a Cancel button, controlling the tab sequence, resetting the focus during program execution, and causing ToolTips to appear ... text in an object by changing the object's ForeColor property True False 26 Joining two strings of text is called concatenation True False 27 Long code statements can be implicitly continued in

Ngày tải lên: 01/03/2019, 16:59

... by defining access keys, setting an Accept and a Cancel button, controlling the tab sequence, resetting the focus during program execution, and causing ToolTips to appear 2-27 52 (p 83) Setting ... understand and operate by defining access keys, setting an Accept and a Cancel button, controlling the tab sequence, resetting the focus during program execution, and causing ToolTips to appear ... strings of text is called concatenation TRUE Difficulty: Medium Objective: Concatenate (join) strings of text 27 (p 93) Long code statements can be implicitly continued in multiple lines in Visual

Ngày tải lên: 02/03/2019, 09:17

... Exercises was designed by Gustave Eiffel was discovered by Crick and Watson was invented by the Chinese 10 was discovered by Marie Curie 104 The puncture has been mended The concert has been cancelled ... up going to discos because they’re too noisy 138 a c e f g d 139 by checking the instructions (in) spending too long on one question trying to see how your friends are getting on by allowing time ... going being late ordering goods online 141 go waking arrive finding spending say being 142 of looking to risk in persuading to hearing to have to achieve for letting or to have let 10 of sending

Ngày tải lên: 20/05/2021, 10:17

... 429 Using NSData to Create Custom Archives 436 Using the Archiver to Copy Objects 439 Exercises 441 20 Introduction to Cocoa and Cocoa Touch 443 Framework Layers 443 Cocoa Touch 444 21 Writing ... language source file .cc, .cpp C+ + language source file .h Header file .m Objective -C source file .mm Objective -C+ + source file .pl Perl source file .o Object (compiled) file Objective -C source files ... about its initial characteristics acquired from the factory, but also its current characteristics.Those charac- teristics can change dynamically.As you drive your car, the gas tank becomes depleted,...

Ngày tải lên: 18/02/2014, 12:20

... gases a Red square containing a letter ‘B’ C Energised electrical equipment Blue circle containing a letter C D Metal fires Yellow five-pointed star containing a letter ‘D’. Also marking to indicate the ... environment, surface contaminants; – Grinding dusts; – The welding environment itself, which may be deficient in oxygen, or contain asbestos, chemical hazards, oils, etc. Health Effects of Inhaled Substances The ... Shutting down all gas flames for welding cutting preheating, etc, 3 Switching off all electric welding equipment, 4 Rendering safe any equipment relying on supplies also cut off by an electric power...

Ngày tải lên: 06/03/2014, 07:20

... allocating individual positions to classes while retaining the specification writing function cen- trally and conducting post audits of the agency classification actions. Also, examinations could ... place more decision-making authority in the hands of line managers, com- mensurate with their accountability to the public. The functions may include recruiting, examining, and position classification, ... Service Commission, Introducing the Civil Service Reform Act. Washington, D .C. : U.S. Government Printing Office, November 1978, p. 2. The First Century of Civil Service Reform 11 boards of examiners...

Ngày tải lên: 22/03/2014, 19:20

... be printed at the points indicated by the next two occurrences of the %i characters in the format string. Summary After reading this introductory chapter on developing programs in Objective -C, you should ... of programming in Objective -C rests on the extensive frameworks that are available. Chapter 2, Programming in Objective -C, ” begins by teaching you how to write your first program in Objective -C. Because ... puzzled by the leading @ character. With- out that leading @ character, you are writing a constant C- style string; with it, you are writing an NSString string object. More on this topic in Chapter...

Ngày tải lên: 29/04/2014, 15:25