//
//  main.m
//  hello-obj
//
//  Created by zhouyang on 16/4/4.
//  Copyright © 2016年 zhouyang. All rights reserved.
//
#import <Foundation/Foundation.h>
//枚举变量，代表形状
typedef enum{kCircle,kRectangle,kEgg
} ShapeType;
//枚举变量，代表颜色
typedef enum{kRedColor,kGreenColor,kBlueColor
} ShapeColor;
//结构体，代表形状
typedef struct{int x,y,width,height;
}ShapeRect;
//结构体，表示多边形的各项属性
typedef struct {ShapeType type;ShapeColor fillColor;ShapeRect bounds;}Shape;
//返回颜色对应的NSString
NSString *colorName(ShapeColor colorName){switch(colorName){case kRedColor:return @"red";break;case kGreenColor:return @"green";break;case kBlueColor:return @"blue";break;}return @"no clue";
}
//“画出”圆，其实就是输出图形的各项属性
void drawCircle(ShapeRect bounds,ShapeColor fillColor){NSLog(@"drawing a circle at (%d,%d,%d,%d) in %@",bounds.x,bounds.y,bounds.width,bounds.height,colorName(fillColor));
}
//“画出”长方形
void drawRectangle(ShapeRect bounds,ShapeColor fillColor){NSLog(@"drawing a rectangle at (%d,%d,%d,%d) in %@",bounds.x,bounds.y,bounds.width,bounds.height,colorName(fillColor));
}
//"画出"Egg
void drawEgg(ShapeRect bounds,ShapeColor fillColor){NSLog(@"drawing a egg at (%d,%d,%d,%d) in %@",bounds.x,bounds.y,bounds.width,bounds.height,colorName(fillColor));
}
//遍历Shape数组，画出对应的图形
void drawShapes(Shape shapes[],int count){for(int i=0;i<count;i++){switch (shapes[i].type) {case kCircle:drawCircle(shapes[i].bounds, shapes[i].fillColor);break;case kRectangle:drawRectangle(shapes[i].bounds,shapes[i].fillColor);break;case kEgg:drawEgg(shapes[i].bounds,shapes[i].fillColor);break;default:NSLog(@"can't find the shape!");}}
}
int main(int argc, const char * argv[]) {Shape shapes[3];//CircleShapeRect rect0={0,0,10,30};shapes[0].type=kCircle;shapes[0].fillColor=kRedColor;shapes[0].bounds=rect0;//RectangleShapeRect rect1={30,40,50,60};shapes[1].type=kRectangle;shapes[1].fillColor=kGreenColor;shapes[1].bounds=rect1;//EggShapeRect rect2={15,18,37,29};shapes[2].type=kEgg;shapes[2].fillColor=kBlueColor;shapes[2].bounds=rect2;//画出数组Shape中的图形drawShapes(shapes,3);
}

#import <Foundation/Foundation.h>
//注意枚举变量的定义，变量之间以逗号隔开
typedef enum{kRedColor,kGreenColor,kBlueColor
}ShapeColor;
typedef struct {int x,y,width,height;
}ShapeRect;
NSString *ColorName(ShapeColor color){switch (color) {case kRedColor:return @"red";break;case kGreenColor:return @"green";break;case kBlueColor:return @"blue";break;}return @"no clue";
}
//定义接口
//@告诉编译器，这里是对C的扩展
@interface Circle:NSObject{//定义数据成员@privateShapeColor fillColor;ShapeRect bounds;
}
//列举方法的名称，返回值的类型和某些参数
//前面的短线表明这是Objective-c方法的声明
- (void) setFillColor:(ShapeColor) fillColor;
- (void) setBounds:(ShapeRect) bounds;
- (void) draw;
@end //@Circle
//接口定义完毕
//下面开始实现接口Circle
@implementation Circle
- (void) setFillColor:(ShapeColor) c {fillColor=c;
}//设置颜色
- (void) setBounds:(ShapeRect) b{bounds=b;
}
- (void) draw{NSLog(@"drawing a circle at (%d %d %d %d) in %@",bounds.x,bounds.y,bounds.width,bounds.height,ColorName(fillColor));
}
@end //Circle
//定义接口
//@告诉编译器，这里是对C的扩展
@interface Rectangle:NSObject{//定义数据成员
@privateShapeColor fillColor;ShapeRect bounds;
}
//列举方法的名称，返回值的类型和某些参数
//前面的短线表明这是Objective-c方法的声明
- (void) setFillColor:(ShapeColor) fillColor;
- (void) setBounds:(ShapeRect) bounds;
- (void) draw;
@end //@Rectangle
//接口定义完毕
//下面开始实现接口Rectangle
@implementation Rectangle
- (void) setFillColor:(ShapeColor) c {fillColor=c;
}//设置颜色
- (void) setBounds:(ShapeRect) b{bounds=b;
}
- (void) draw{NSLog(@"drawing a rectangle at (%d %d %d %d) in %@",bounds.x,bounds.y,bounds.width,bounds.height,ColorName(fillColor));
}
@end //Egg
//定义接口
//@告诉编译器，这里是对C的扩展
@interface Egg:NSObject{//定义数据成员
@privateShapeColor fillColor;ShapeRect bounds;
}
//列举方法的名称，返回值的类型和某些参数
//前面的短线表明这是Objective-c方法的声明
- (void) setFillColor:(ShapeColor) fillColor;
- (void) setBounds:(ShapeRect) bounds;
- (void) draw;
@end //@Triangle
//接口定义完毕
//下面开始实现接口Triangle
@implementation Egg
- (void) setFillColor:(ShapeColor) c {fillColor=c;
}//设置颜色
- (void) setBounds:(ShapeRect) b{bounds=b;
}
- (void) draw{NSLog(@"drawing a egg at (%d %d %d %d) in %@",bounds.x,bounds.y,bounds.width,bounds.height,ColorName(fillColor));
}
@end //Egg
//定义接口
//@告诉编译器，这里是对C的扩展
@interface Triangle:NSObject{//定义数据成员
@privateShapeColor fillColor;ShapeRect bounds;
}
//列举方法的名称，返回值的类型和某些参数
//前面的短线表明这是Objective-c方法的声明
- (void) setFillColor:(ShapeColor) fillColor;
- (void) setBounds:(ShapeRect) bounds;
- (void) draw;
@end //@Triangle
//接口定义完毕
//下面开始实现接口Triangle
@implementation Triangle
- (void) setFillColor:(ShapeColor) c {fillColor=c;
}//设置颜色
- (void) setBounds:(ShapeRect) b{bounds=b;
}
- (void) draw{NSLog(@"drawing a triangle at (%d %d %d %d) in %@",bounds.x,bounds.y,bounds.width,bounds.height,ColorName(fillColor));
}
@end //Triangle
//画出图形
//id 对应类实例
void drawShapes(id shapes[],int count){for(int i=0;i<count;i++){id shape=shapes[i];[shape draw];}
}
int main(int argc, const char * argv[]) {id shapes[4];//Circleshapes[0]=[Circle new];//这里创建新的类实例将new加在类名称的后面ShapeRect rect0={0,0,10,30};[shapes[0] setBounds:rect0];[shapes[0] setFillColor:kRedColor];//RectangleShapeRect rect1={30,40,50,60};shapes[1] =[ Rectangle new];[shapes[1] setBounds:rect1];[shapes[1] setFillColor:kGreenColor];//EggShapeRect rect2={15,18,37,29};shapes[2] =[Egg new];[shapes[2] setBounds:rect2];[shapes[2] setFillColor:kBlueColor];//TriangleShapeRect rect3 ={47,32,80,50};shapes[3] =[Triangle new];[shapes[3] setBounds:rect3];[shapes[3] setFillColor:kGreenColor];//画出数组Shape中的图形drawShapes(shapes,4);return 0;
}