Objective-c + Methods-use of methods

In OC, methods are divided into class methods and instance methods.

+ is a class method, which can be called directly with the class name.

-For instance methods, you must use an instance of the class to invoke.

@interface People:nsobject

-(void) eat;

+ (void) eat;

@end

@implementation people

-(void) Eat

{

NSLog (@ "I am called by an instance of a class-method");

}

+ (void) eat

{

NSLog (@ "I am the + method called by the class");

}

@end

#import <Foundation/Foundation.h>

#import "People"

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

@autoreleasepool {

People *man=[[people Alloc]init];

[Man eat];

[People eat];

}

return 0;

}

Objective-c + Methods-use of methods