The construction method, that is, the int method, does not accept any parameters. In the actual development process, the construction method will be often customized for convenience. Therefore, the following describes the implementation of the construction method and the custom construction method respectively.
#import <Foundation/>
#import ""
int main(int argc, const charchar * argv[])
{
/*
Iphone * phone1 = [Iphone new];
phone1->_cpu = 1.5;
phone1->_ram = 512;
*/
/*Iphone * phone = [Iphone alloc];//offcc
phone = [phone init];//[0ffcc init];
*/
//Open the memory space and initialize the member variables to call together. 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;
}
#import <Foundation/>
enum IphoneSize
{
IphoneSize3point5,// 3.5-inch screen IphoneSize4point0,//4.0-inch screen IphoneSize4point7,//4.7-inch screen IphoneSize5point5 //5.5-inch screen};
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
/** Used to store iPhone screen size */
//enum IphoneSize is equivalent to IphoneSize IphoneSize _size;// Used to store iPhone screen size /** Used to store iPhone color */
IphoneColor _color;// Used to store iPhone color
/** Used to store CPU size */
float _cpu;
/** Used to store internal capacity */
float _ram;
}
/**Open the flash*/
-(void)openFlashLight;
/** Turn off the flash*/
-(void)closeFlashLight;
/**automatic*/
-(void)flaseLightAuto;
/**Photograph*/
-(void) cameraWithFlashLightStatus:(IphoneFlashLightStatus)flaseLightStatus;
/**Return the corresponding color according to the incoming parameters*/
-(NSString * )getColorWithIphoneColor:(IphoneColor)iphoneColor;
+(NSString *)getColorWithIphoneColor:(IphoneColor)iphoneColor;
//Custom constructor method//1. Must be an object method//2. The construction method must start with init-(Iphone *)initWithIphoneSize:(IphoneSize)iphoneSize;
-(Iphone *)initWithIphoneSize:(IphoneSize)iphoneSize andPhoneColor:(IphoneColor)iphoneColor;
@end
Through the above introduction, I hope you will have some understanding and difference between construction methods and custom construction methods, and I hope it will be helpful to you.