设计一个”学生“类

1> 属性

* 姓名

* 生日

用结构体作为类的实例变量(生日)

#import 
     
      //定义生日的结构体typedef struct{int year;int month;int day;}MyDate; @interface Person : NSObject{@publicNSString *_name;//定义姓名MyDate _birthday;//定义生日}@end @implementation Person@endint main(int argc, const char * argv[]) {@autoreleasepool {Person *p = [Person new];p->_name = @"sb";//因为结构体已经初始化为0了，在次初始化就报错了，但是可以逐个赋值。//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);//也可以整体赋值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;}