OC中的 延展

#import <Foundation/Foundation.h>

@interface Student : NSObject

-(void)Dothing;

@end

#import "Student.h"

@interface Student ()

-(void)Sleep;

@end

#import "Student.h"

@implementation Student

-(void)Dothing

{

NSLog(@"Dothing");

}

-(void)Sleep

{

NSLog(@"Sleep");

}

@end

#import <Foundation/Foundation.h>

#import "Student.h"

//#import "Student_Sleep.h"

int main(int argc, const char * argv[])

{

@autoreleasepool

{

Student *stu=[[Student alloc] init];

[stu Dothing];

[stu Sleep];

}

return 0;

}