智能版石头剪刀布——c++实现

灰太狼 2022-06-11 06:37 203阅读 0赞

利用c++实现了相对智能一点的石头剪刀布，方法是为计算机设置偏好，有第一偏好、第二偏好，第三偏好。同时计算机选择的时候会以百分之50的概率选择第一偏好，以百分之40的概率选择第二偏好，百分之10的概率选择第三偏好。

为了更加狡猾，设置全局变量记录运行局数，每隔三局（可以自行设定）分析用户的偏好，从而改变自身的偏好，可以使得计算机更为人性化，完成简单的人机交互。

这也是c++老师曾教给我们的，在Python的学习中遇到类似问题，拿出来温习一下，后续会编写出Python版的。

#include<iostream>
    #include<string>
    #include<ctime>
    #include<cstdlib>
    #define interval 3//间隔为3局 
    //#define 1 rock 
    //#define 2 paper
    //#define 3 scissors
    using namespace std;
    
    //enum class choice(rock,paper,scissors); 
    
    //using namespace choice;
    
    //choice player_choice;
    //choice computer_choice;
    
    string words[3]={"rock","paper","scissors"};
    int player_choice;
    int computer_choice;
    int player_wins=0;
    int computer_wins=0;
    int game_numbers=0;//游戏局数
    int x=0,y=0,z=0;//石头，布，剪刀的次数 
    
    int favorite;  //第一偏好 
    int second_favorite; //第二偏好 
    int third_favorite; //第三偏好 
    
    //choice get_computer_choice();
    int get_computer_choice();
    void decide_winner();
    string get_msg(int winner);
    int randOtoN1(int n);
    int max_number(int x,int y,int z);
    
    int main()
    {
    	srand(time(NULL));
    	string input_str;
    	char c;
    	while(true)
    	{
    		cout<<"enter rock,paper,scissors or exit"<<endl;
    		getline(cin,input_str);
    		if(input_str.size()<1){
    			cout<<"invalid input."<<endl;
    			continue;//结束本次循环 
    		}
    		game_numbers++;//局数加一 
    		
    		c=input_str[0];//取首字母 
    		if(c=='R'||c=='r'){//出石头 
    			x++;
    			player_choice=0;//0表示石头 
    		}
    		else if(c=='p'||c=='P'){
    			y++;
    			player_choice=1;//1表示布 
    		}
    		else if(c=='S'||c=='s'){
    			z++;
    			player_choice=2;//2表示剪刀 
    		}
    		else if(c=='E'||c=='e')//退出 
    			break;
    		else{
    			cout<<"invalid input."<<endl;
    			continue;
    		}
    		computer_choice=get_computer_choice();
    		//int p=(int) player_choice;
    		int p=player_choice;
    		//int c=(int) computer_choice;
    		int c=computer_choice;
    		//cout<<"you chose "<<words[p];
    		
    		cout<<"you chose "<<words[p];
    		cout<<","<<endl;
    		//cout<<"I chose"<<words[c];
    		cout<<"I chose "<<words[c];
    		cout<<","<<endl;
    		decide_winner();
    		cout<<"game numbers are:"<<game_numbers<<endl<<endl;
    	}
    	system("pause");
    	return 0;
    }
    void set_favorite(){
    	//设置计算机偏好 
    	//随机选出第一第二第三偏好 ，以50%的概率选择第一偏好，40%概率选择第二偏好 
    	int n = randOtoN1(3);
    	favorite = n;
    	int m = randOtoN1(2);
    	if(m == 0){
    		second_favorite = (n+1)%3;
    		third_favorite = (n+2)%3;
    	}else{
    		second_favorite = (n+2)%3;
    		third_favorite = (n+1)%3;
    	}
    	int max = max_number(x,y,z);
            if((game_numbers)%interval == 0 && max != 0)//当局数等于间隔的整数倍时 且xyz不相等  
             //每隔三局判定用户偏好，制定策略   
            {  
             if(max == x)  {  
                favorite = 2;  
                if(y >= z){  
                    second_favorite = 3;  
                    third_favorite = 1;  
                }  
                else{  
                    second_favorite = 1;  
                    third_favorite = 3;  
                }  
             }  
             else if(max == y) {  
                favorite = 3;  
                if(x >= z){  
                    second_favorite = 2;  
                    third_favorite = 1;  
                }else{  
                    second_favorite = 1;  
                    third_favorite = 2;  
                }  
             }    
             else {  
                 favorite = 1;  
                 if(x >= y){  
                    second_favorite = 2;  
                    third_favorite = 3;  
                 }else{  
                    second_favorite = 3;  
                    third_favorite = 2;  
                 }  
             }  
           }  
    }
    int get_computer_choice()
    {
    	set_favorite();
    	int w = randOtoN1(10);
    	
    	if(w <= 5)  return favorite;
    	else if (w > 5 && w < 8)  return second_favorite;
    	else return third_favorite;
    	
    }
    void decide_winner()
    {
    	if(computer_choice==player_choice){
    		cout<<"result is a tie"<<endl;
    		cout<<"player wins:"<<player_wins<<endl;
    		cout<<"computer wins:"<<computer_wins<<endl;
    		return ;
    	}
    	//int p=static_cast<int>(play_choice);
    	int p=player_choice;
    	//int c=static_cast<int>(computer_choice);
    	int c=computer_choice;
    	if(p-c==1||p-c==-2){
    		cout<<get_msg(player_choice);
    		cout<<"you win"<<endl;
    		player_wins++;
    	}else{
    		cout<<get_msg(computer_choice);
    		cout<<"I win"<<endl;
    		computer_wins++;
    	}
    	cout<<"player wins:"<<player_wins<<endl;
    	cout<<"computer wins:"<<computer_wins<<endl;
    	cout<<endl;
    }
    string get_msg(int winner)
    {
    	if(winner==0)
    	 return string("Rock smashes scissors...");
    	else if(winner==1)
    	 return string("paper smashes rock...");
    	else
    	 return string("scissors smashes paper...");
    } 
    
    int randOtoN1(int n) //产生随机数的函数 
    {
    	return rand()%n;
    }
    
    int max_number(int x,int y,int z){
    	int max;
    	if(x==y&&y==z)  return 0;
    	if(x>=y&&x>=z)  max=x;
    	else if(y>=x&&y>=z) max=y;
    	else max=z;
    	return max;
    }