ObjectiveC:DefaultClassTemplate
 Objective-C의 클래스의 기본 형태는 Foundation.h의 NSObject를 상속받는다. 
Header file
#import <Foundation/Foundation.h>
@interface TestClass : NSObject
{
@private
    int _x;
    int _y;
}
- (void) setAttributeWithX: (int) x andY: (int) y;
- (int) getAttributeX;
- (int) getAttributeY;
@end
Source file
#import "header file path"
@implementation TestClass
// constructor
- (id) init
{
    if (self = [super init]) {
        // init member ...
    }
    return self;
}
// destructor
- (void) dealloc
{
    // release member ...
    [super dealloc];
}
- (void) setAttributeWithX: (int) x andY: (int) y
{
    _x = x;
    _y = y;
}
- (int) getAttributeX
{
    return _x;
}
- (int) getAttributeY
{
    return _y;
}
@end