ios struct property

ios 中property应该怎样修饰struct？

typedef struct s {    int i;} s;@interface Test : NSObject {    s *myS;}@property (nonatomic, assign) s *myS;@end@implementation Test@synthesize myS;- (id) init {    self = [super init];    myS = malloc(sizeof(s));    myS->i = 0;    return self;}@end// somewhere later.Test *t = [[Test alloc] init];t.myS->i = 10;