//  对象作为函数的参数--类与对象的内存分析//成员方法和函数的区别#import 
     
      @interface Car : NSObject{    @public    int wheel;    int speed;}-(void) run;@end@implementation Car-(void)run{    NSLog(@"%i轮子，时速%i的车子跑起来了",wheel,speed);}@end//函数一：这种情况，c->wheel的值传进来了，并不会影响对象成员变量的值void test(int m,int s){    m=20;    s=300;}//函数二：这种情况能够改变对象的值void test1(Car* mc){    mc->wheel=5;}//函数三：这种情况不会改变void test2(Car* mc){    Car *c2 = [Car new];    c2->wheel = 5;    c2->speed = 300;        mc = c2;    mc->wheel = 6;}int main(int argc, const char * argv[]) {    Car* c=[Car new];    c->wheel=4;    c->speed=200;    //    test(c->wheel,c->speed);    test1(c);        [c run];    return 0;}