Cool Student Classroom

Classroom.h

//
//  Classroom.h
//  LighthouseClassroom
//
//  Created by Ian MacKinnon on 2015-07-02.
//  Copyright (c) 2015 Ian MacKinnon. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Classroom : NSObject

@property(nonatomic, strong) NSMutableArray *students;

@end

Classroom.m

//
//  Classroom.m
//  LighthouseClassroom
//
//  Created by Ian MacKinnon on 2015-07-02.
//  Copyright (c) 2015 Ian MacKinnon. All rights reserved.
//

#import "Classroom.h"

@implementation Classroom

-(instancetype) init{
    self = [super init];
    
    if (self){
        self.students = [[NSMutableArray alloc] init];
    }
    
    return self;
}

@end

CoolStudent.h

//
//  CoolStudent.h
//  LighthouseClassroom
//
//  Created by Ian MacKinnon on 2015-07-02.
//  Copyright (c) 2015 Ian MacKinnon. All rights reserved.
//

#import "Student.h"

@interface CoolStudent : Student

-(void) takeSelfie;

@end

CoolStudent.m

//
//  CoolStudent.m
//  LighthouseClassroom
//
//  Created by Ian MacKinnon on 2015-07-02.
//  Copyright (c) 2015 Ian MacKinnon. All rights reserved.
//

#import "CoolStudent.h"

@implementation CoolStudent

-(void) takeSelfie{
    NSLog(@"Cool Student took a #selfie");
}

-(void) morningGreeting{
    //[super morningGreeting];
    NSLog(@"'sup my bros");
}

@end

main.m

//
//  main.m
//  LighthouseClassroom
//
//  Created by Ian MacKinnon on 2015-07-02.
//  Copyright (c) 2015 Ian MacKinnon. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Student.h"
#import "CoolStudent.h"
#import "Classroom.h"

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        
        Student *student1 = [[Student alloc] init];
        [student1 setAge:26];
        
        NSLog(@"Student's age is: %d", student1.age);
        NSLog(@"Student slept %d hours", student1.hoursSlept);
        
        Student *student2 = [[CoolStudent alloc] init];
        [student2 setAge:28];
        
        Student *student3 = [[Student alloc] init];
        [student2 setAge:24];
        
        NSLog(@"Cool Student's age is: %d", [student2 age]);
        NSLog(@"Cool Student slept %d hours", [student2 hoursSlept]);
        //[student2 takeSelfie];
        
        NSLog(@"=================");
        
        Classroom *frontBoardroom = [[Classroom alloc] init];
        
        [frontBoardroom.students addObject:student1];
        [frontBoardroom.students addObject:student2];
        [frontBoardroom.students addObject:student3];
        
        for (Student *student in frontBoardroom.students){
            [student morningGreeting];
        }

    }
    return 0;
}

Student.h

//
//  Student.h
//  LighthouseClassroom
//
//  Created by Ian MacKinnon on 2015-07-02.
//  Copyright (c) 2015 Ian MacKinnon. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Student : NSObject

@property(nonatomic, assign) int age;

-(int) hoursSlept;

-(void) morningGreeting;

@end

Student.m

//
//  Student.m
//  LighthouseClassroom
//
//  Created by Ian MacKinnon on 2015-07-02.
//  Copyright (c) 2015 Ian MacKinnon. All rights reserved.
//

#import "Student.h"

@implementation Student {
    int _numberOfHoursSlept;
}


-(instancetype) init{
    self = [super init];
    
    if (self){
        _numberOfHoursSlept = 7;
    }
    
    return self;
}

-(int) hoursSlept{
    return _numberOfHoursSlept -3;
}

-(void) morningGreeting{
    NSLog(@"Good Morning Everyone");
}


@end