@interface Car : NSObject
{  
   @public
   int wheels;
   int speed;
}

- (void)run;

@end

@ implementation Car
- (void)run
{
NSLog(@"车子跑起来了！")；
}
@end

int main()
{
  Car *p = [Car new];
  Car *p2 = [Car new];
  
  p2->wheels = 5;
  p2->speed  = 300;
  [p2 run]

  p->wheels = 4;
  p->speed = 250;
  [p run]


NSLog(@"车子有%d个轮子，时速为：%dkm/h", p->wheels,p->speed );
NSLog(@"车子有%d个轮子，时速为：%dkm/h", p2->wheels,p2->speed );
return 0;
}

占个沙发

说的很好,顶

努力学习中。。。。。。。。

顶一个。也是刚学到这