这是一种PHP没有的结构,类似于数组

//
//  main.m
//  say_hellow
//
//  Created by 刘立博 on 14-4-15.
//  Copyright (c) 2014年 刘立博. All rights reserved.
//
#import <Foundation/Foundation.h>
typedef enum{
    kCircle,
    kRectangle,
    kEgg
} ShapeType;
typedef enum{
    kRedColor,
    kGreenColor,
    kBlueColor
} ShapeColor;
typedef struct{
    int x,y,width,height;
} ShapeRect;
typedef struct{
    ShapeType type;
    ShapeColor fill_color;
    ShapeRect bounds;
} Shape;
void drawkCircle(ShapeRect bounds,ShapeColor fill_color)
{
    NSLog(@"draw circle");
}
void drawkRectangle(ShapeRect bounds,ShapeColor fill_color)
{
    NSLog(@"draw Rectangle");
}
void drawkEgg(ShapeRect bounds,ShapeColor fill_color)
{
    NSLog(@"draw Egg");
}
void drawShapes(Shape shapes[], int count)
{
    for (int i = 0; i<count; i++) {
        switch (shapes[i].type) {
            case kCircle:
                drawkCircle(shapes[i].bounds,shapes[i].fill_color);
                break;
            case kRectangle:
                drawkRectangle(shapes[i].bounds,shapes[i].fill_color);
                break;
            case kEgg:
                drawkEgg(shapes[i].bounds,shapes[i].fill_color);
                break;
            default:
                break;
        }
    }
}
int main(int argc, const char * argv[])
{
    Shape shapes[3];
       
    ShapeRect rect0 = {0,0,10,30};
    shapes[0].type = kCircle;
    shapes[0].fill_color = kRedColor;
    shapes[0].bounds = rect0;
       
    ShapeRect rect1 = {0,0,10,30};
    shapes[1].type = kRectangle;
    shapes[1].fill_color = kGreenColor;
    shapes[1].bounds = rect1;
       
    ShapeRect rect2 = {0,0,10,30};
    shapes[2].type = kEgg;
    shapes[2].fill_color = kBlueColor;
    shapes[2].bounds = rect2;
       
    drawShapes(shapes,3);
       
    return 0;
}

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