1. #import <Foundation/Foundation.h>
   
2. @interface Person : NSObject
   
3. {
   
4.     int _age;
   
5.     int _height;
   
6.     double _weight;
   
7.     NSString *_name;
   
8. }
   
9. 
   
10. // @property：可以自动生成某个成员变量的setter和getter声明
    
11. @property int age;
    
12. 
    
13. @property int height;
    
14. 
    
15. @property double weight;
    
16. 
    
17. @property NSString *name;
    
18. 
    
19. @end

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上面的四条@property语句的功能就相当于一下代码：

1. #import <Foundation/Foundation.h>
   
2. 
   
3. @interface Person : NSObject
   
4. {
   
5.     int _age;
   
6.     int _height;
   
7.     double _weight;
   
8.     NSString *_name;
   
9. }
   
10. 
    
11. - (void)setAge:(int)age;
    
12. - (int)age;
    
13. 
    
14. - (void)setHeight:(int)height;
    
15. - (int)height;
    
16. 
    
17. - (void)setWeight:(double)weight;

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1. #import <Foundation/Foundation.h>
   
2. @interface Person : NSObject
   
3. {
   
4.     int _age;
   
5.     int _height;
   
6.     double _weight;
   
7.     NSString *_name;
   
8. }
   
9. 
   
10. // @property：可以自动生成某个成员变量的setter和getter声明
    
11. @property int age;
    
12. 
    
13. @property int height;
    
14. 
    
15. @property double weight;
    
16. 
    
17. @property NSString *name;
    
18. 
    
19. @end

复制代码

上面的四条@property语句的功能就相当于一下代码：

1. #import <Foundation/Foundation.h>
   
2. 
   
3. @interface Person : NSObject
   
4. {
   
5.     int _age;
   
6.     int _height;
   
7.     double _weight;
   
8.     NSString *_name;
   
9. }
   
10. 
    
11. - (void)setAge:(int)age;
    
12. - (int)age;
    
13. 
    
14. - (void)setHeight:(int)height;
    
15. - (int)height;
    
16. 
    
17. - (void)setWeight:(double)weight;

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