前言

这是一个猜拳游戏，玩家选择想要出的拳头：1 剪刀 2 石头 3 布，
机器人随机出拳头，
裁判宣布比赛结果，并为胜利者加1分。

一、玩家类Player.h和Player.m两个文件

Player.h文件：

#import <Foundation/Foundation.h>
#import “FistType.h”
NS_ASSUME_NONNULL_BEGIN

@interface Player : NSObject
@property NSString *name;
@property FistType fistType;
@property int score;

• (void)showFist;
• (NSString *)fistTypeWithNumber:(int)number;
  @end

NS_ASSUME_NONNULL_END

Player.m文件：

#import “Player.h”

@implementation Player

• (void)showFist
  {
  NSLog(@“亲爱的玩家【%@】，请输入你要出的拳头，1 剪刀 2 石头 3 布：”,self.name);
  int userSelected = 0;
  rewind(stdin);
  scanf(“%d”,&userSelected);
  NSString *fistType = [self fistTypeWithNumber:userSelected];
  NSLog(@“亲爱的玩家【%@】，您选择的拳头是：%@”,self.name,fistType);
  self.fistType = userSelected;
  }

• (NSString *)fistTypeWithNumber:(int)number
  {
  switch(number)
  {
  case 1:
  return @“剪刀”;
  break;
  case 2:
  return @“石头”;
  break;
  case 3:
  return @“布”;
  break;
  default:
  return @“请输入正确的数值”;
  break;
  }
  }
  @end

二、机器人类Robot.h文件和Robot.m文件

1.Robot.h文件

#import <Foundation/Foundation.h>
#import “FistType.h”
NS_ASSUME_NONNULL_BEGIN

@interface Robot : NSObject
@property NSString *name;
@property FistType fistType;
@property int score;

• (void)showFist;
• (NSString *)fistTypeWithNumber:(int)number;
  @end

NS_ASSUME_NONNULL_END

2.Robot.m文件：

#import “Robot.h”
#import <stdlib.h>
@implementation Robot

• (void)showFist
  {
  int robotSelected = arc4random_uniform(3) + 1;
  NSString *robotFistType = [self fistTypeWithNumber:robotSelected];
  NSLog(@“机器人【%@】，你出的拳头是：%@”,self.name,robotFistType);
  self.fistType = robotSelected;
  }
• (NSString *)fistTypeWithNumber:(int)number
  {
  switch(number)
  {
  case 1:
  return @“剪刀”;
  break;
  case 2:
  return @“石头”;
  break;
  case 3:
  return @“布”;
  break;
  default:
  return @“请输入正确的数值”;
  break;
  }
  }
  @end

3.裁判类Judge.h文件和Judge.m文件：

Judge.h文件：

#import <Foundation/Foundation.h>
#import “Player.h”
#import “Robot.h”
NS_ASSUME_NONNULL_BEGIN

@interface Judge : NSObject
@property NSString *name;

• (void)judgeWithPlayer:(Player *)player andWith:(Robot *)robot;
  @end

NS_ASSUME_NONNULL_END

4.Judge.m文件：

#import “Judge.h”

@implementation Judge

• (void)judgeWithPlayer:(Player *)player andWith:(Robot *)robot
  {
  int playerFist = player.fistType;
  int robotFist = robot.fistType;
  //player robot
  // 1 3 -2 剪刀 1 石头 2 布 3
  // 2 1 1
  // 3 2 1
  if((playerFist - robotFist) == -2 || (playerFist - robotFist) == 1)
  {
  //玩家赢
  NSLog(@“亲爱的玩家【%@】，恭喜你获得了胜利！”,player.name);
  int playerScore = player.score;
  playerScore++;
  player.score = playerScore;
  }
  else if(playerFist == robotFist )
  {
  //平局
  NSLog(@“你们真是心有灵犀啊！”);
  }
  else
  {
  //机器人赢
  NSLog(@“机器人【%@】，获得了胜利”,robot.name);
  int robotScore = robot.score;
  robotScore++;
  robot.score = robotScore;
  }
  NSLog(@“玩家【%@】 -------- 机器人【%@】 ---------”,player.name,robot.name);
  NSLog(@“%d --------------- %d”,player.score,robot.score);

}
@end

5.main.m文件：

#import <Foundation/Foundation.h>
#import “Player.h”
#import “Robot.h”
#import “Judge.h”
int main(int argc, const char * argv[])
{
Class classPlayer = [Player class];
Class classRobot = [Robot class];
Class classJudge = [Judge class];
Player *p1 = [classPlayer new];
Robot *r1 = [classRobot new];
Judge *j1 = [classJudge new];
p1.name = @“小明”;
r1.name = @“啊法狗”;
j1.name = @“黑哨”;
SEL playerShowFist = @selector(showFist);
SEL robotShowFist = @selector(showFist);
SEL judgeJudge = @selector(judgeWithPlayer:andWith:);
while(1)
{
[p1 performSelector:playerShowFist];
[r1 performSelector:robotShowFist];
[j1 performSelector:judgeJudge withObject:p1 withObject:r1];
char ans = ‘a’;
rewind(stdin);
NSLog(@“亲爱的玩家【%@】，您还想再玩儿1把吗：y/n”,p1.name);
scanf(“%c”,&ans);
if(ans != ‘y’)
{
return 0;
}
}
}

5.FistType.h文件：

#ifndef FistType_h
#define FistType_h

typedef enum
{
FistTypeJianDao = 1,
FistTypeShiTou = 2,
FistTypeBu = 3
} FistType;

#endif /* FistType_h */

总结

把上面几个文件建立好，把内容拷贝进去，然后运行，就可以了，需要Xcode和Mac电脑。