#import <Foundation/Foundation.h>
//要求:建立一个类包涵复杂类型成员变量,类里包涵一个类
//建立一个Dog类,包含了枚举类型
typedef enum{
MaoSeBlack,
MaoSeWrith
} MaoSe;
@interface Dog : NSObject
{
@public
int weight;
MaoSe maoSe;
}
- (void)run;
- (void)eat;
@end
@implementation Dog
- (void)run{
weight--;
NSLog(@"狗跑了一会儿后体重%dkg", weight);
}
- (void)eat{
weight++;
NSLog(@"狗吃了一次食物后体重%dkg", weight);
}
@end
//**************************************************//
//建立一个Student类,包含Dog类和枚举类型和结构体类型
typedef struct{
int year;
int mouth;
int day;
} Brithday;
typedef enum{
SexMan,
SexWoman
} Sex;
@interface Student : NSObject
{
@public
int age;
int weight;
Brithday date;
Sex sex;
Dog *dog;
}
- (void)print;
- (void)run;
- (void)eat;
- (void)liuGou;
- (void)weiGou;
@end
@implementation Student
- (void)print{
NSLog(@"学生性别%d,年龄%d岁,体重%d公斤,生日%d年%d月%d日,宠物狗的毛色%d,狗的体重%d公斤", sex, age, weight, date.year, date.mouth, date.day, dog->maoSe, dog->weight);
}
- (void)run{
weight--;
NSLog(@"学生跑了一段时间体重为%dkg", weight);
}
- (void)eat{
weight++;
NSLog(@"学生吃了一顿饭为%dkg", weight);
}
- (void)liuGou{
[dog run];
}
- (void)weiGou{
[dog eat];
}
@end
//****************************************************//
int main(){
Student *s = [Student new];
// 用dog变量时,先建立一个Dog类的一个新的dog对象
s->dog = [Dog new];
s->age = 17;
s->sex = SexMan;
s->weight = 40;
// 结构体变量在这里不能直接赋值
Brithday b = {1987, 9, 5};
s->date = b;
s->dog->weight = 10;
s->dog->maoSe = MaoSeWrith;
[s print];
[s run];
[s eat];
[s liuGou];
[s weiGou];
return 0;
} |
|
收藏
淘帖
踩
