Objective-C:在类中设置不同协议

在下面的代码中,设置了两种不同的协议规则:一种是老师对学生设置的协议:即老师发出命令后，学生站起来、回答问题、坐下; 另一种是我对学生设置的协议:即学生按照我的协议中的初始化函数去初始化一个整数。

//我设置的协议Myprotocol，里面有我设置的协议规则(属性、函数)作为一个单独的文件

 //  Myprotocol.h
 //  协议
 //
 //  Created by ma c on 15/8/12.
 //  Copyright (c) 2015年. All rights reserved.
 //

 #import <Foundation/Foundation.h>

 @protocol Myprotocol
 @property(nonatomic,assign)NSInteger integer;
 -(id)initWithInteger:(NSInteger) i;
 -(void) show2;
 -(void)print;
 -(void) initialize;
 @end

//老师设置的协议和类本身的属性 .h和.m文件；在类里面直接设置协议,没有作为单独的文件

 //  Teacher.h
 //  协议
 //
 //  Created by ma c on 15/8/12.
 //  Copyright (c) 2015年. All rights reserved.
 //

 #import <Foundation/Foundation.h>
 @protocol TeacherDelegate//老师制定协议规则
 @required //在协议代理人类中必须要全部实现的方法
 -(void) show1;
 -(void) Standup;
 -(void) Answerquestion;
 @optional //协议代理人类中可以选择性的实现(可以实现，也可以不用实现)
 -(void) Setdown;
 @end

 @interface Teacher : NSObject
 @property(nonatomic,weak) id<TeacherDelegate> delegate;
 -(void)ordering;
 @end

 //  Teacher.m
 //  协议
 //
 //  Created by ma c on 15/8/12.
 //  Copyright (c) 2015年. All rights reserved.
 //

 #import "Teacher.h"

 @implementation Teacher
 @synthesize delegate;
 -(void)ordering
 {
     [delegate show1];
     NSLog(@"teacher is ordering!");
     [self.delegate Standup];
     [self.delegate Answerquestion];
     [self.delegate Setdown];
 }
 @end

//学生类Student 它作为实现这两种协议的代理人(委托者).h和.m文件

 //  Student.h
 //  协议
 //
 //  Created by ma c on 15/8/12.
 //  Copyright (c) 2015年. All rights reserved.
 //

 #import "Teacher.h"
 #import "TeacherDelegate.h"
 #import "Myprotocol.h"
 @interface Student : Teacher<TeacherDelegate,Myprotocol>
 @end

 //  Student.m
 //  协议
 //
 //  Created by ma c on 15/8/12.
 //  Copyright (c) 2015年. All rights reserved.
 //

 #import "Student.h"

 @implementation Student
 @synthesize integer;
 //TeacherDelegate
 -(void) show1
 {
     NSLog(@"the teacher's protocol is running!");
 }
 -(void) Standup
 {
     NSLog(@"student stand up.");
 }
 -(void) Answerquestion
 {
     NSLog(@"student answer question.");
 }
 -(void) Setdown
 {
     NSLog(@"student set down!");
 }
 //Myprotocol
 -(void) show2
 {
     NSLog(@"the my protocol is running!");
 }
 -(id)initWithInteger:(NSInteger) i
 {
     self = [super init];
     if(self)
     {
         self.integer = i;
     }
     return self;
 }
 -(void)print
 {
     NSLog(@"integer=%ld",self.integer);
 }
 -(void) initialize
 {
     NSLog(@"Integer's initialization succeed.");
 }
 @end

//主函数测试这两种协议的实现

 //  main.m
 //  协议
 //
 //  Created by ma c on 15/8/12.
 //  Copyright (c) 2015年. All rights reserved.
 //

 #import <Foundation/Foundation.h>
 #import "Teacher.h"
 #import "Student.h"
 #import "Myprotocol.h"
 int main(int argc, const char * argv[])
 {
     @autoreleasepool
     {
         Teacher *teacher = [[Teacher alloc]init];

         //老师设置学生代理实现老师设置的协议(TeacherDelegate)
         Student *student = [[Student alloc]init];
         [teacher setDelegate:student];
         [teacher ordering];
         printf("\n");

         //我设置学生代理实现我设置的协议(Myprotocol)
         Student *stu = [[Student alloc]initWithInteger:];
         [stu show2];
         [stu print];
         [stu initialize];
     }
     return ;
 }

//运行结果

-- ::51.498 协议[:] the teacher's protocol is running!
-- ::51.499 协议[:] teacher is ordering!
-- ::51.499 协议[:] student stand up.
-- ::51.500 协议[:] student answer question.
-- ::51.500 协议[:] student set down!

-- ::51.500 协议[:] the my protocol is running!
-- ::51.500 协议[:] integer=
-- ::51.500 协议[:] Integer's initialization succeed.
Program ended with exit code: