OC Language Learning (c) member variable Get/set method and "." Syntax, @proterty, and @synthesize keywords

Person.h

#ifndef oc_person_h#define oc_person_h@interface person:nsobject{    int age; @protected    float height;} -(int) age; Get Method-(void) Setage: (int) pAge;  Set Method @end#endif

Person.m

#import <Foundation/Foundation.h> #import "Person.h" @implementation person-(int) age{    return age;} -(void) Setage: (int) page{Age    = PAge;} @end

main.m

int main () {    person* per = [[Person alloc] init];    int age = [per age]; Call the Get method    [per setage:16];//Call the Set method        //use "." To invoke Get/set  using the original variable name, which requires the variable's get, set all conform to the convention    int age2 = Per.age; Get    per.age = n;//set        return 0;}

every time this writing Get/set method, very troublesome, OC has an automated method that uses@protertyand the@synthesizeKey Words

Person.h

#ifndef oc_person_h#define oc_person_h@interface person:nsobject{    int age; @protected    float height;} -(int) age;//-(void) Setage: (int) pAge; @property int age; The compiler automatically interprets the declaration of the Get/set method into int age @end#endif

person.m

#import <Foundation/Foundation.h> #import "Person.h" @implementation person//-(int) age//{//    return age;//} -(void) Setage: (int) page//{//Age    = page;//} @synthesize age;//compiler automatically interprets get, set method implementations of age @end

OC Language Learning (c) member variable Get/set method and "." Syntax, @proterty, and @synthesize keywords