@interface RSSEntry : NSObject{
    NSString *blogTitle;
    NSString *articleTitle;
    NSString *articleUrl;
    NSDate *articleDate;
}

@property (copy) NSString *blogTitle;
@property (copy) NSString *articleTitle;
@property (copy) NSString *articleUrl;
@property (copy) NSDate *articleDate;

@end

现在,在创建对象时,如何使这些成员变量初始化,尤其是在Xcode项目中启用ARC时？我是Objective-C的新手;我正在寻找类似C语言的构造函数.