李刚OC语言疯狂讲义笔记

#import <Foundation/Foundation.h>
//定义生日的结构体
typedef struct{
int year;
int month;
int day;
}MyDate;

@interface Person : NSObject
{
@public
NSString *_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;
}