Shulou(Shulou.com)06/02 Report--

This article shows you the categories in Objective-C, which are concise and easy to understand, which will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

Animal.h

# import

@ interface Animal: NSObject

-(void) eat: (NSString *) food

@ end

Animal.m

# import "Animal.h"

@ implementation Animal

/ * *

Eat

/

-(void) eat: (NSString) food {

NSLog (@ "I like eat% @", food)

}

@ end

Testing in the main entry

# import

# import "Animal.h"

Int main (int argc, const char argv []) {

@ autoreleasepool {

Animal dog = [[Animal alloc] init]

NSString * food = @ "Bone"

[dog eat:food]

}

Return 0

}

Results:

First, name and classify AnimalPart

H:

# import

# import "Animal.h"

@ interface Animal (AnimalPart)

-(void) call: (NSString *) sound;@end

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