#import <Foundation/Foundation.h>
@interface Car : NSObject
{// 成员变量
@public
int wheels;
int speed;
}
- (void)run;
@end
@implementation Car
- (void)run
{
NSLog(@"%d个轮子，速度为%dkm/h的车子跑起来", wheels, speed);
}
@end
void test(int w, int s)
{
w = 20;
s = 200;
}
void test1(Car *newC)
{
newC->wheels = 5;
}
void test2(Car *newC)
{
Car *c2 = [Car new];
c2->wheels = 5;
c2->speed = 300;
newC = c2;
newC->wheels = 6;
}
int main()
{
Car *c = [Car new];
c->wheels = 4;
c->speed = 250;
//test(c->wheels, c->speed);
//test1(c);
test2(c);
[c run];
return 0;
}