main.m
#import <Foundation/Foundation.h>
#import "Student.h"
#import "Dog.h"
int main(int argc, const char * argv[])
{
Student *s = [Student new];
Dog *dog = [Dog new];
s->weight = 60;
s->sex = SexWoman;
s->favColor = ColorGreen;
s->birthday.year = 1995;
s->birthday.month = 2;
s->birthday.day = 1;
[s run];
[s eat];
[s print];
dog->weight = 20;
dog->curColor = ColorGreen;
[s eatDog];
[s playDog];
[dog run];
[dog eat];
return 0;
}
Student.h
/*
类名：Student
属性：性别，生日，体重，喜欢的颜色，狗（体重，毛的颜色，吃，跑）
方法：吃，跑步，喂狗，遛狗
*/
#impprt <Foundation/Foundation.h>
@class Dog;
typedef enum //枚举
{
SexMan, //枚举常量命名一般以枚举类型的名称开头
SexWoman //枚举每项以逗号隔开，最后一项不写
}Sex;
typedef struct //结构体
{
int year;
int month;
int day;
}Date;
typedef enum
{
ColorBlack,
ColorRed,
ColorGreen
}Color;
@interface Student : NSObject
{
@public
Sex sex;
Date birthday;
double weight; //包括小数点后
Color favColor;
Dog *dog;
}
- (void) run;
- (void) eat;
- (void) print;
- (void) eatDog;
- (void) playDog;
@end
Student.m
#import "Student.h"
@implementation Student
- (void) run
{
weight -=1;
NSLog(@"学生成功减掉一斤肉");
}
- (void) eat
{
weight +=1;
NSLog(@"学生长了一斤肉");
}
- (void) print
{
NSLog(@"性别=%d，体重=%f，最喜欢的颜色=%d，生日是=%d-%d-%d",sex,weight,favColor,birthday);
}
- (void) eatDog
{
// dog->weight +=1; 面向过程，非面向对象
[dog eat];
}
- (void) playDog
{
[dog run];
}
@end
Dog.h
#import <Foundation/Foundation.h>
//狗（体重，毛的颜色，吃，跑）
typedef enum
{
ColorBlack,
ColorRed,
ColorGreen
}Color;
@interface Dog : NSObject
{
@public
double weight;
Color curColor;
}
- (void) run;
- (void) eat;
@end
Dog.m
#import "Dog.h"
@implementation Dog
- (void) run
{
weight -=1;
NSLog(@"狗成功减掉一斤肉");
}
- (void) eat
{
weight +=1;
NSLog(@"狗长了一斤肉");
}
@end
@class A：只调用类
#import "A.h"：调用类和方法
