学生 成员变量：性别、生日、体重、最喜欢的颜色、狗(体重、毛色、吃、跑)
方法：吃、跑步、遛狗、喂狗
#import <Foundation/Founfation.h>
//枚举变量
typedef enum
{
SexMan,
SexWoman
}Sex;
typedef struct
{
int year;
int month;
int day;
}Date;
typedef enum
{
ColorBlack,
ColorRed,
ColorGreen
}Color;
@interface Dog:NSObject
{
@public
double weight;//体重
Color curColor;//毛色
}
- (void)eat;
- (void)run;
@end
@implement Dog
- (void)eat
{
weight+=1;
NSLog(@"狗吃完这次之后的体重是：%f",weight);
}
- (void)run
{
weight -= 1;
NSLog(@"狗跑完这次的体重是：%f",weight);
}
@end
@interface Student:NSObject
{
@public
Sex sex;//性别
Date birthday;//生日
double weight;//体重（kg）
Color favColor;//最喜欢的颜色
char name;
Dog *dog;
}
- (void)eat;
- (void)run;
- (void)print;
- (void)liuDog;
- (void)weiDog;
@end
@implement Student
- (void)eat
{
weight = weight + 1;//weight+=1;
NSLog(@"学生吃完这次之后的体重是：%f",weight);
}
- (void)run
{
weight -= 1;
NSLog(@"学生跑完这次的体重是：%f",weight);
}
- (void)print
{
NSLog(@"姓名：%s,性别：%d,体重:%d,喜欢的颜色:%d,生日:%d-%d-%d,",name,sex,weight,favColor,birthday.year,birthday.month,birthday.day);
}
- (void)liuDog
{
//让狗跑起来，调用狗的run方法
[dog run];
}
- (void)weiDog
{
//让狗吃东西，调用狗的eat方法
[dog eat];
}
@end
int main()
{
Student *s = [Student new];
Dog *d = [Dog new];
d->curColor = ColorGreen;
d->weight = 20;
s->dog = [Dog new];
s->name = "jack";
//体重
s->weight = 50;
//性别
s->sex = SexMan;
//生日
//s->birthday = {2011,2,23};不能这么写
//s->birthday.year = 2011;
//s->birthday.month = 2;
//s->birthday.day = 23;
Date d = {2011,2,23};
s->birthday = d;
//喜欢的颜色
s->favColor = ColorBlack;
[s eat];
[s run];
[s run];
[s print];
[s liuDog];
[s weiDog];
return 0;
}
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