iOS OC02_可见度,方法

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// Student.h

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import <Foundation/Foundation.h>

@interface Student :NSObject

//成员变量可见度

//@public的级别是最低的,都可以用对象->的方式找到成员变量,不安全

//如果没写可见度,默认是被保护的,被保护的成员变量可以在当前类及其子类使用

//@private私有的:只能当前的类可以使用,使用的范围更小

//@package这个是系统一些文件来使用,系统来用,如果以后看见了,直接跳过去就行

{

@public

NSString *_stuName;

NSString *_stuSex;

@protected

NSString *_stuHobby;

@private

CGFloat _stuScore;

NSInteger _stuAge;

}

-(void)sayHi;

-(void)eat;

-(void)play;

//对所有成员变量的赋值语句

//只要是有参数,就一定要加冒号,冒号的作用相当于标识参数

//在调用方法的时候我们通过参数形容词知道对应要填的参数,形参名是方法实现的时候用的

- (void)setStuName:(NSString *)stuName

setStuAge:(NSInteger)stuAge

setStuScore:(CGFloat)stuScore

setStuSex:(NSString *)stuSex

setStuHobby:(NSString *)stuHobby;

// 设置器和访问器都是针对一个成员变量进行值得存储和读取,当对多个成员变量进行操作的时候,称为赋值语句

//设置器

- (void)setStuName:(NSString *)stuName;

- (void)setStuAge:(NSInteger)stuAge;

- (void)setStuScore:(CGFloat)stuScore;

- (void)setStuSex:(NSString *)stuSex;

- (void)setStuHobby:(NSString *)stuHobby;

//访问器

- (NSString *)stuName;

- (NSInteger)stuAge;

- (CGFloat)stuScore;

- (NSString *)stuSex;

- (NSString *)stuHobby;

// 自定义的初始化方法

// 方法必须init开头,后面跟一个With,W必须大写

- (id)initWithStuName:(NSString *)stuName

stuAge:(NSInteger)stuAge

stuScore:(CGFloat)stuScore

stuSex:(NSString *)stuSex

stuHobby:(NSString *)stuHobby;

// 便利构造器

@end

// Student.m

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import "Student.h"

@implementation Student

-(void)sayHi{

NSLog(@"%@,%@,%@,%g,%ld",_stuName,_stuSex,_stuHobby,_stuScore,_stuAge);

}

-(void)eat{

NSLog(@"要吃饭");

}

-(void)play{

NSLog(@"要玩");

}

- (void)setStuName:(NSString *)stuName

setStuAge:(NSInteger)stuAge

setStuScore:(CGFloat)stuScore

setStuSex:(NSString *)stuSex

setStuHobby:(NSString *)stuHobby

{

_stuName =stuName;

_stuAge = stuAge;

_stuHobby=stuHobby;

_stuScore=stuScore;

_stuSex=stuSex;

}

// 设置器

- (void)setStuName:(NSString *)stuName{

_stuName=stuName;

}

- (void)setStuAge:(NSInteger)stuAge{

_stuAge=stuAge;

}

- (void)setStuScore:(CGFloat)stuScore{

_stuScore=stuScore;

}

- (void)setStuSex:(NSString *)stuSex{

_stuSex=stuSex;

}

- (void)setStuHobby:(NSString *)stuHobby{

_stuHobby=stuHobby;

}

//访问器

- (NSString *)stuName{

return_stuName;

}

- (NSInteger)stuAge{

return_stuAge;

}

- (CGFloat)stuScore{

return_stuScore;

}

- (NSString *)stuSex{

return_stuSex;

}

- (NSString *)stuHobby{

return_stuHobby;

}

-(id)init{

_stuAge = 18;

_stuHobby =@"女";

_stuName=@"张三";

_stuScore=75.5;

_stuSex=@"男";

return self;

}

- (id)initWithStuName:(NSString *)stuName

stuAge:(NSInteger)stuAge

stuScore:(CGFloat)stuScore

stuSex:(NSString *)stuSex

stuHobby:(NSString *)stuHobby

{

_stuAge =stuAge;

_stuName =stuName;

_stuScore =stuScore;

_stuSex =stuSex;

_stuHobby=stuHobby;

return self;

}

@end

// main.m

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import <Foundation/Foundation.h>

#import "Student.h"

#import "AudiCar.h"

// OC里的枚举

NS_ENUM(NSInteger, NSSeason){

Spring = 1 << 0,

Summer = 1 << 1,

Autumn = 1 << 2,

Winter = 1 << 3

};

int main(int argc,const char * argv[]) {

// //创建一个对象

//// Student *stu=[[Student alloc] init];

//// [stu sayHi];

////

// // 方法一共分为两种,一种是+方法,称为类方法,这种方法一般类来进行使用,比如alloc

// // 第二种是-号方法,称为实例方法,一般对象来调用,比如我们自己写的sayHi,init

// Student *stu =[[Student alloc] init];

//// [stu setStuName:@"杨林" setStuAge:29 setScore:75.5 setStuSex:@"男" setStuHobby:@"女"];

// [stu sayHi];

// [stu setStuHobby:@"玩"];

// NSLog(@"%@",[stu stuHobby]);

Student *stu =[[Studentalloc]initWithStuName:@"商帅"stuAge:20 stuScore:75.3stuSex:@"男"stuHobby:@"臭美" ];

[stusayHi];

// 消息机制

// [消息的接受者具体要做的事]

AudiCar *car =[[AudiCaralloc] initWithSetBand:@"A6"setCharge:34 setColour:@"白色"];

NSLog(@"%ld",Spring |Summer);

return 0;

}

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