OOP: Chapter 2: Programming in Objective-C
1 like573 views
This document discusses programming in Objective-C. It presents several example programs that demonstrate basic Objective-C syntax like importing frameworks, using NSAutoreleasePool, NSLog functions, and performing calculations. It also explains how to compile and run Objective-C programs on different platforms like OSX, Windows, and Linux. Common filename extensions for different programming languages are also listed.
1 of 9
![2
Program 2.1 (ex02-01.m)
// First program example
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
! NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
! NSLog (@"Programming is fun");
!
! [pool drain];
! return 0;
}
Atit Patumvan, Faculty of Management and Information Sciences, Naresuan University Object-Oriented Programming Language
วันอังคารที่ 7 กุมภาพันธ์ 12](https://image.slidesharecdn.com/objc-02-120207031519-phpapp02/85/OOP-Chapter-2-Programming-in-Objective-C-2-320.jpg)
![5
Explanation of Your First Program
// First program example
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
! NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
! NSLog (@"Programming is fun");
!
! [pool drain];
! return 0;
}
Atit Patumvan, Faculty of Management and Information Sciences, Naresuan University Object-Oriented Programming Language
วันอังคารที่ 7 กุมภาพันธ์ 12](https://image.slidesharecdn.com/objc-02-120207031519-phpapp02/85/OOP-Chapter-2-Programming-in-Objective-C-5-320.jpg)
![6
Program 2.2 (ex02-02.m)
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
! NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
!
! NSLog (@"Programming is fun");
! NSLog (@"Programming in Objective-C is event more fun!");
!
! [pool drain];
! return 0;
}
Programming is fun
Programming in Objective-C is event more fun!
Atit Patumvan, Faculty of Management and Information Sciences, Naresuan University Object-Oriented Programming Language
วันอังคารที่ 7 กุมภาพันธ์ 12](https://image.slidesharecdn.com/objc-02-120207031519-phpapp02/85/OOP-Chapter-2-Programming-in-Objective-C-6-320.jpg)
![7
Program 2.3 (ex02-03.m)
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
! NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
!
! NSLog (@"Testing...n..1n...2n....3");
!
! [pool drain];
! return 0;
}
Testing...
..1
...2
....3
Atit Patumvan, Faculty of Management and Information Sciences, Naresuan University Object-Oriented Programming Language
วันอังคารที่ 7 กุมภาพันธ์ 12](https://image.slidesharecdn.com/objc-02-120207031519-phpapp02/85/OOP-Chapter-2-Programming-in-Objective-C-7-320.jpg)
![8
Program 2.4 (ex02-04.m)
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
! NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
!
! int sum;
!
! sum = 50 + 25;
! NSLog (@"The sum of 50 and 25 is %i", sum);
!
! [pool drain];
!
! return 0;
}
The sum of 50 and 25 is 75
Atit Patumvan, Faculty of Management and Information Sciences, Naresuan University Object-Oriented Programming Language
วันอังคารที่ 7 กุมภาพันธ์ 12](https://image.slidesharecdn.com/objc-02-120207031519-phpapp02/85/OOP-Chapter-2-Programming-in-Objective-C-8-320.jpg)
![9
Program 2.5 (ex02-05.m)
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
! NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
!
! int value1, value2, sum;
!
! value1 = 50;
! value2 = 25;
! sum = value1 + value2;
! NSLog (@"The sum of %i and %i is %i", value1, value2, sum);
!
! [pool drain];
!
! return 0;
}
The sum of 50 and 25 is 75
Atit Patumvan, Faculty of Management and Information Sciences, Naresuan University Object-Oriented Programming Language
วันอังคารที่ 7 กุมภาพันธ์ 12](https://image.slidesharecdn.com/objc-02-120207031519-phpapp02/85/OOP-Chapter-2-Programming-in-Objective-C-9-320.jpg)
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- 6. 6 Program 2.2 (ex02-02.m) #import <Foundation/Foundation.h> int main (int argc, const char * argv[]) { ! NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; ! ! NSLog (@"Programming is fun"); ! NSLog (@"Programming in Objective-C is event more fun!"); ! ! [pool drain]; ! return 0; } Programming is fun Programming in Objective-C is event more fun! Atit Patumvan, Faculty of Management and Information Sciences, Naresuan University Object-Oriented Programming Language วันอังคารที่ 7 กุมภาพันธ์ 12
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- 8. 8 Program 2.4 (ex02-04.m) #import <Foundation/Foundation.h> int main (int argc, const char * argv[]) { ! NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; ! ! int sum; ! ! sum = 50 + 25; ! NSLog (@"The sum of 50 and 25 is %i", sum); ! ! [pool drain]; ! ! return 0; } The sum of 50 and 25 is 75 Atit Patumvan, Faculty of Management and Information Sciences, Naresuan University Object-Oriented Programming Language วันอังคารที่ 7 กุมภาพันธ์ 12
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