Objective-C member variable permissions

Member variable permissions

Declaring member variables cannot declare properties and methods

@public Open It's OK not to pass setter/getter visit

@private Private have access to setter/getter visit , uninheritable

@protected The protected （ Default permissions ） Can be inherited , have access to setter/getter

@package Accessible within the framework , Not accessible outside the framework

#import <Foundation/Foundation.h>


@interface Person : NSObject{
    @public
    NSString* _name;
}

@end

#import <Foundation/Foundation.h>
#import "Person.h"


int main(int argc, const char * argv[]) {
    @autoreleasepool {
        Person* p1 = [Person new];
        //public Access to member variables 
        p1->_name = @"dancer";
        
    }
    return 0;
}