1.結(jié)構(gòu)體成員變量

設(shè)計(jì)一個(gè)”學(xué)生“類
1> 屬性
* 姓名
* 生日
用結(jié)構(gòu)體作為類的實(shí)例變量(生日)

#import <Foundation/Foundation.h> //定義生日的結(jié)構(gòu)體
typedef struct{
    int year;
    int month;
    int day;
}MyDate;

@interface Person : NSObject
{
    @public
    NSString *_name;//定義姓名
    MyDate _birthday;//定義生日
}
@end

@implementation Person
@end


int main(int argc, const char * argv[]) {
    Person *p = [Person new];
    p->_name = @"sb";

    //因?yàn)榻Y(jié)構(gòu)體已經(jīng)初始化為0了,在次初始化就報(bào)錯(cuò)了,但是可以逐個(gè)賦值。
    //p->_birthday = {1990,12,3};
    p->_birthday.year = 2014;
    p->_birthday.month = 05;
    p->_birthday.day = 12;
    NSLog(@"%@的生日是:%d年%d月%d 日",p->_name,p->_birthday.year,p->_birthday.month,p->_birthday.day);

    //也可以整體賦值
    MyDate de={1993,11,11};
    p->_birthday = de;
    NSLog(@"%@的生日是:%d年%d月%d 日",p->_name,p->_birthday.year,p->_birthday.month,p->_birthday.day);
    return 0;
}