构造方法，自定义构造方法

//
//  main.m

#import <Foundation/Foundation.h>
#import "Iphone.h"
int main(int argc, const char * argv[])
{
    /*
    Iphone * phone1 = [Iphone new];
    phone1->_cpu = 1.5;
    phone1->_ram = 512;
    */

    /*Iphone * phone = [Iphone alloc];//offcc

    phone = [phone init];//[0ffcc init];
    */
    //开辟内存空间，以及初始化成员变量合并一起调用
    Iphone * phone = [[Iphone alloc]init];//[0ffcc init];
    phone->_ram = 512;

    NSLog(@"%@",phone);

    Iphone * phone2 = [[Iphone alloc] initWithIphoneSize:IphoneSize4point0];

    NSLog(@"%@",phone2);

    Iphone * phone3 = [[Iphone alloc] initWithIphoneSize:IphoneSize4point0 andPhoneColor:IphoneColorBlack];

    return 0;
}

//
//  Iphone.h

#import <Foundation/Foundation.h>

enum IphoneSize
{
    IphoneSize3point5,//3.5寸屏幕
    IphoneSize4point0,//4.0寸屏幕
    IphoneSize4point7,//4.7寸屏幕
    IphoneSize5point5 //5.5寸屏幕
};

typedef enum IphoneSize IphoneSize;
enum IphoneColor
{
    IphoneColorWhite,
    IphoneColorBlack
};

typedef enum IphoneColor IphoneColor;

enum IphoneFlashLightStatus
{
    IphoneFlashLightStatusOpen,
    IphoneFlashLightStatusClose,
    IphoneFlashLightStatusAuto
};
typedef enum IphoneFlashLightStatus IphoneFlashLightStatus;

@interface Iphone : NSObject
{
    @public
    /** 用来存储iPhone屏幕尺寸 */
    //enum IphoneSize 与IphoneSize 等价
    IphoneSize _size;//用来存储iPhone屏幕尺寸
    /** 用来存储iPhone颜色 */
    IphoneColor _color;//用来存储iPhone颜色

    /** 用来存储cpu大小 */
    float _cpu;
    /** 用来存储内部容量大小 */
    float _ram;
}

/**打开闪光灯*/
-(void)openFlashLight;
/**关闭闪光灯*/
-(void)closeFlashLight;
/**自动*/
-(void)flaseLightAuto;
/**拍照*/
-(void) cameraWithFlashLightStatus:(IphoneFlashLightStatus)flaseLightStatus;

/**根据传入参数返回相应颜色*/
-(NSString * )getColorWithIphoneColor:(IphoneColor)iphoneColor;

+(NSString *)getColorWithIphoneColor:(IphoneColor)iphoneColor;

//自定义构造方法
//1.一定是对象方法
//2.构造方法一定是init开头
-(Iphone *)initWithIphoneSize:(IphoneSize)iphoneSize;
-(Iphone *)initWithIphoneSize:(IphoneSize)iphoneSize andPhoneColor:(IphoneColor)iphoneColor;
@end

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