@synthesize a=b; 与@synthesize c;的差异

@synthesize a=b; 与@synthesize c;的区别
@synthesize a=b;
@synthesize c;

- (void)loadView {
a=1;                                                         ／／打印结果
b=9;
NSLog(@"loadView......%d",a);               ／／结果 1
NSLog(@"loadView1......%d",b);                          9
NSLog(@"loadView2........%d",[self a]);                9
NSLog(@"loadView......%d",a);                            1

[self setC:5];

NSLog(@"loadView3......%d",c);                            5
NSLog(@"loadView4........%d",[self c]);                  5
}


个人觉得是引用。