Programming in Objective-C (6th Edition) (Developer's Library)

Programming in Objective-C (6th Edition) (Developer's Library)

Stephen G. Kochan

Language: English

Pages: 576

ISBN: 0321967607

Format: PDF / Kindle (mobi) / ePub

Programming in Objective-C (6th Edition) (Developer's Library)

Stephen G. Kochan

Language: English

Pages: 576

ISBN: 0321967607

Format: PDF / Kindle (mobi) / ePub


Updated for OS X 10.9 Mavericks, iOS 7, and Xcode 5

Programming in Objective-C is a concise, carefully written tutorial on the basics of Objective-C and object-oriented programming for Apple's iOS and OS X platforms.

The book makes no assumptions about prior experience with object-oriented programming languages or with the C language (which Objective-C is based upon). Because of this, both beginners and experienced programmers alike can use this book to quickly and effectively learn the fundamentals of Objective-C. Readers can also learn the concepts of object-oriented programming without having to first learn all of the intricacies of the underlying C programming language.

This unique approach to learning, combined with many small program examples and exercises at the end of each chapter, makes Programming in Objective-C ideally suited for either classroom use or self-study.

This edition has been fully updated to incorporate new Objective-C features and technologies introduced with Xcode 5, iOS 7, and Mac OS X Mavericks.

“The best book on any programming language that I’ve ever read. If you want to learn Objective-C, buy it.”—Calvin Wolcott

“An excellent resource for a new programmer who wants to learn Objective-C as their first programming language—a woefully underserved market.”—Pat Hughes

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Beginning Software Engineering

Succeeding with Agile: Software Development Using Scrum

 

 

 

 

 

 

 

 

 

 

in place of the corresponding statement from Program 5.3: bean_counter--.This is a matter for statement. However, as you’ll NSLog ("%2i %i", n, triangularNumber); To verify that this change solves the problem, here’s the output from the modified program (called Program 5.3A). Program 5.3A Output TABLE OF TRIANGULAR NUMBERS n Sum from 1 to n --- --------------1 1 2 3 3 6 4 10 5 15 6 21 7 28 8 36 9 45 10 55 The primary change made to the NSLog statement is the inclusion of a field width

equivalently formulated using compound relationals, like so: if ( [chessGame isOver] == NO && [chessGame whoseTurn] == YOU ) [chessGame yourMove]; www.it-ebooks.info 103 104 Chapter 6 Making Decisions A more practical example of nested if statements might involve adding an else clause to the previous example, as shown here: if ( [chessGame isOver] == NO ) if ( [chessGame whoseTurn] == YOU ) [chessGame yourMove]; else [chessGame myMove]; Executing this statement proceeds as described

..., valuen, which must be simple constants or constant expressions. If a case is found whose value is equal to the value of expression, the program statements that follow the case are executed. Note that when more than one such program statement is included, they do not have to be enclosed within braces. The break statement signals the end of a particular case and causes execution of the switch statement to be terminated. Remember to include the break statement at the end of every case.

operator are the question mark (?) and the colon (:).The first operand is placed before the ?, the second between the ? and the :, and the third after the :. The general format of the conditional expression is shown here: condition ? expression1 : expression2 In this syntax, condition is an expression, usually a relational expression, that the Objective-C system evaluates first whenever it encounters the conditional operator. If the result of the evaluation of condition is true (that is,

main (int argc, char * argv[]) { @autoreleasepool { Fraction *aFraction = [[Fraction alloc] init]; Fraction *bFraction = [[Fraction alloc] init]; [aFraction setTo: 1 over: 4]; [bFraction setTo: 1 over: 2]; // set 1st fraction to 1/4 // set 2nd fraction to 1/2 [aFraction print]; NSLog (@"+"); [bFraction print]; NSLog (@"="); [aFraction add: bFraction]; // reduce the result of the addition and print the result [aFraction reduce]; [aFraction print]; } return 0; } www.it-ebooks.info The self

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