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标题: @property关键字介绍及使用 [打印本页]

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作者: 花——九    时间: 2015-10-19 23:17
标题: @property关键字介绍及使用
@property关键字介绍及使用
#import <Foundation/Foundation.h>
#import "Person.h"
int main(int argc, const char * argv[]) {
    @autoreleasepool {
      
        Person *p = [Person new];
        p.name = @"凤姐";   //[p setName:@"凤姐"];
        p.age = 18;
        p.weight = 80.3f;
        p.height = 2.5f;
        p.sex = 1;
        NSLog(@"name = %@,%d,%.2f,%.2f,%d",p.name,p.age,p.weight,p.height,p.sex);  // [p name];
        
   
        
    }
    return 0;
}


#import <Foundation/Foundation.h>

@interface Person : NSObject
{
    //实例变量
    NSString *_name;
    int _age;
    float _height;
    float _weight;
    int _sex;
   
}
//提供对实例变量操作的对外的接口

//-(void)setAge:(int)age;
//-(void)setHeight:(float)height;
//-(void)setWeight:(float)weight;
//-(void)setSex:(int)sex;
//

//-(int)age;
//-(float)height;
//-(float)weight;
//-(int)sex;
//生成_name的get和set方法的声明
@property NSString* name;
//-(void)setName:(NSString *)name;
//-(NSString *)name;

@property int age,sex;
@property float height,weight;
//@property float weight;
//@property int sex;
//注意:如果 @property 都是同一个类型的,可以放到一行上,用逗号分隔,而不需要写多行的@property
+(void)run;
@end
#import "Person.h"

@implementation Person
//提供对实例变量操作的对外的接口
-(void)setName:(NSString *)name{

    _name = name;
}
-(void)setAge:(int)age{
   
    _age = age;

}
-(void)setHeight:(float)height{
   
    _height = height;

}
-(void)setWeight:(float)weight{
   
    _weight = weight;

}
-(void)setSex:(int)sex{
   
    _sex = sex;

}

-(NSString *)name{

    return _name;

}
-(int)age{

    return _age;
}
-(float)height{
   
    return _height;

}
-(float)weight{
   
    return _weight;


}
-(int)sex{


    return _sex;

}
@end

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