W1D2 breakout demo

main.m

//
//  main.m
//  BreakoutW1D2
//
//  Created by David Mills on 2017-05-02.
//  Copyright © 2017 David Mills. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Rectangle.h"
#import "Square.h"

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        NSMutableArray *rectangles = [[NSMutableArray alloc] init];
        
        // insert code here...
        Rectangle *rect = [[Rectangle alloc] initWithWidth:25.0 andHeight:15.0];
        Rectangle *rect2 = [[Rectangle alloc] initWithWidth:7.0 andHeight:23.3];
        Rectangle *rect3 = [[Rectangle alloc] initWithWidth:42.0 andHeight:5.0];
        Square *square = [[Square alloc] initWithSideLength:10.0];
        
//        [rectangles addObject:rect];
//        [rectangles addObject:rect2];
//        [rectangles addObject:rect3];
        
        [rectangles addObjectsFromArray:@[rect, rect2, rect3, square]];
        
//        rect.width = 25.0;
//        rect.height = 15.0;


        for (Rectangle *rectangleInArray in rectangles) {
          NSLog(@"%0.4f", [rectangleInArray area]);
        }
//        NSLog(@"%0.2f", [rect area]);
//        NSLog(@"%0.2f", [rect2 area]);
//        NSLog(@"%0.2f", [rect3 area]);
//        NSLog(@"%0.2f", rect.width * rect.height);
        
        
    }
    return 0;
}

Rectangle.h

//
//  Rectangle.h
//  BreakoutW1D2
//
//  Created by David Mills on 2017-05-02.
//  Copyright © 2017 David Mills. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Rectangle : NSObject

@property (nonatomic) double width;
@property (nonatomic) double height;

- (instancetype) initWithWidth:(double)width andHeight:(double)height;

- (double) area;

@end

Rectangle.m

//
//  Rectangle.m
//  BreakoutW1D2
//
//  Created by David Mills on 2017-05-02.
//  Copyright © 2017 David Mills. All rights reserved.
//

#import "Rectangle.h"

@implementation Rectangle

- (instancetype)initWithWidth:(double)width andHeight:(double)height {
    if (self = [super init]) {
        // Custom initialization
        _width = width;
        _height = height;
    }
    
    return self;
}

- (double)area {
    return self.width * self.height;
}

@end

Square.h

//
//  Square.h
//  BreakoutW1D2
//
//  Created by David Mills on 2017-05-02.
//  Copyright © 2017 David Mills. All rights reserved.
//

#import "Rectangle.h"

@interface Square : Rectangle

- (instancetype) initWithSideLength:(double)length;

@end

Square.m

//
//  Square.m
//  BreakoutW1D2
//
//  Created by David Mills on 2017-05-02.
//  Copyright © 2017 David Mills. All rights reserved.
//

#import "Square.h"

@implementation Square

- (instancetype)initWithSideLength:(double)length {
    if (self = [super initWithWidth:length andHeight:length]) {
        // Custom Initializtion
        // Nothing really to do here.
    }
    
    return self;
}

- (double)area {
    return self.width * self.width;
}

@end