/*猜數游戲*/
       /*程序產生一個隨機數，游戲者輸入數據進行猜測。管理員可輸入密碼，
       其中普通管理員只能獲得答案，超級管理員獲得答案并能修改普通管理員密碼*/ 
        #include<stdio.h>
        #include<stdlib.h>
        #include<time.h>
        
        #define NO 0
        #define YES 1
        #define QUIT -1
        #define EASY 1
        #define COMMON 2
        #define HARD 3
        #define PASSWORD2 -111111 /*超級管理員密碼，不可修改*/ 
      
         char *PasswordName= "LiangJianbin";/*超級管理員確認密碼，不可修改*/ 
         int Password1 =111111 ;  /*普通管理員密碼，可修改*/ 
         int number;       /*計算機產生的隨機數*/ 
         int guess_value=0; /*游戲者輸入的猜測數*/ 
         int nbr_of_guesses=0;/*累加游戲者猜測的次數*/ 
         int done=0;  /*標記游戲者是否猜對，若猜對則  done=1*/
     
     
        void the_back_door(int password,int answer);  /*開個后門好作弊，判斷普通或超級管理員*/ 
        void super_Adm_menu(int answer); /*超級管理員選擇菜單*/ 
        void game_introduction(void);/*游戲介紹，選擇游戲級別或退出*/ 
        void quit_or_not(void);    /*確認是否退出*/ 
        void change_password(int answer);/*修改普通管理員密碼*/ 
        void input_data(void);/*輸入數據或退出，管理員可輸入密碼*/ 
        void congratulate(void) ;  /*祝賀猜對并問是否繼續*/
        int judge(void);/*判斷數據是否正確*/ 
        void enter_password_name(char *true_password);/*確認超級管理員*/  
        
        int main(void)
        {
            game_introduction();/*游戲介紹，選擇游戲級別或退出*/ 
            system("pause");
            return 0;
             
         }    
                
            
     void game_introduction(void)/*游戲介紹，選擇游戲級別或退出*/ 
     {
            int selection;
            int flag=0;/*循環游戲介紹標志，選擇游戲級別或退出后flag=1，循環結束*/  
            do
            {
                nbr_of_guesses=0;
                puts("This is a guess number game.You can input a number to guess.");
                
                do
                {
                      puts("\n1--Get a easy degree.");
                      puts("\n2--Get a common degree.");
                      puts("\n3--Get a hard  degree.");
                      puts("\n-1--Quit the game.");
                      puts("\nEnter a selection.");
                
                      scanf("%d",&selection);
               }while(selection!=-1&&selection<1||selection>3);
            
               if(selection==EASY)
               {
                     printf("\n\nGetting a Random number\n");
                    /*產生隨機數*/
                    srand( (unsigned) time(NULL)); 
                    number=rand();
                    flag=1;
               }
               else if  (selection==COMMON)
               {
           
                    printf("\n\nGetting a Random number\n");
                    /*產生隨機數*/
                    srand( (unsigned) time(NULL)); 
                    number=rand();
                    flag=1;
               }  
              else if  (selection==HARD)
              {
                    printf("\n\nGetting a Random number\n");
                    /*產生隨機數*/
                    number=rand();
                    flag=1 ;
              }      
              else
                    quit_or_not(); /*確認是否退出*/ 
        }  while(flag==0);/*循環游戲介紹，選擇游戲級別或退出*/  
        
          input_data();/*輸入數據或退出，管理員可輸入密碼*/   
    }        
            
            
                
   void quit_or_not(void) /*確認是否退出*/ 
   {
         int flag=0;
         /*放棄后可再來一次*/
        printf("\nOh,You just give it up ,do you want to try again?");
        printf("\nplease input 1 to start,or other number to end\n");
        scanf("%d",&flag);
          
        if (flag==YES)
        {
            guess_value=0;
            game_introduction();/*游戲介紹，選擇游戲級別或退出*/ 
        }   
        else
        {
             system("pause"); 
             exit(0);
        }    
              
   }    
            
   
   void input_data(void)/*輸入數據或退出，管理員可輸入密碼*/ 
   {
         int flag=0;
         do
         {
              do 
              {
                  printf("\nPick a number between 0 and %d :",RAND_MAX);
                  printf("\nOr input -1 to give up :");
                  scanf("%d",&guess_value);  /*Get a number*/ 
                  nbr_of_guesses++;
                  
                  if(guess_value==Password1||guess_value==PASSWORD2)
                     the_back_door(guess_value,number); /*開個后門好作弊，判斷普通或超級管理員*/ 
                    
              }  while(guess_value!=QUIT && guess_value<0 || guess_value>RAND_MAX);
             
             if(guess_value==QUIT)
                 quit_or_not(); /*確認是否退出*/ 
             else
                 flag=judge(); /*判斷數據是否正確*/   
        } while(flag==0);/*循環輸入數據，直到用戶輸入正確或選擇退出*/ 
                      
        congratulate()  ;/*祝賀猜對并問是否繼續*/    
  }    
       
                       
   int judge(void)/*判斷數據是否正確*/    
   {
         done=NO;
         if(number==guess_value)
            done=YES;
         else if(number<guess_value)
            printf("\nYou guessed %d is high!\n",guess_value);
         else 
            printf("\nYou guessed %d is low!\n",guess_value);
           
        the_back_door(guess_value,number);/*開個后門好作弊，判斷普通或超級管理員*/
             
        return done;/*返回done值，判斷數據是否正確*/  
   }    
           
            
   void the_back_door(int password,int answer) /*開個后門好作弊，判斷普通或超級管理員*/
   {
        if(password==Password1)
        {
             printf("\nOh You are the Administrator!the answer is %d",answer);
             input_data();/*輸入數據或退出，管理員可輸入密碼*/ 
        } 
          
        if(password==PASSWORD2)
             super_Adm_menu(number);/*超級管理員選擇菜單*/ 
   }  
   
        
  void super_Adm_menu ( int answer) /*超級管理員選擇菜單*/ 
  {
        int selection;
        enter_password_name( PasswordName);/*確認超級管理員*/ 
                  
        do
        {
              puts("\n1--Get the answer.");
              puts("\n2--Change the password.");
              puts("\n3--Quit the game.");
              puts("\nEnter a selection.");
              
              scanf("%d",&selection);
        }while(selection<1||selection>3);
                 
        if(selection==1)
         {
              printf("\nthe answer is %d",answer);
              input_data();/*輸入數據或退出，管理員可輸入密碼*/ 
         }    
         if(selection==2)
              change_password(number);/*修改普通管理員密碼*/
         else
         {
              system("pause"); 
              exit(0);
         }    
  }    
                 
                 
                 
             void change_password(int answer)/*修改普通管理員密碼*/ 
             {   
                 int new_password_1,new_password_2;
                 int  sum=0;
                 int selection;
                 
                 puts("Please enter the new password:");
                 scanf("%d",&new_password_1);
                 do
                 {  
                     puts("Please make sure the new password:");
                     scanf("%d",&new_password_2);
                     sum++;
                     if(sum>3)
                     {
                          puts("you are tired,leave the computer and have a rest!goodbye!");
                          system("pause"); 
                          exit(0) ;  /*退出游戲*/ 
                     }    
                 }while  (new_password_1!=new_password_2 ) ;/*循環輸入確認密碼，直到用戶輸入正確或超過三次，自動退出*/ 
                  
                 Password1 =new_password_1;
                 puts("\n the new password is built!");
                 printf("It is %d\n",new_password_1);
                 do
                 {
                     puts("\n1--Get the answer.");
                     puts("\n2--Change the password.");
                     puts("\n3--Quit the game.");
                     puts("\nEnter a selection.");
                
                     scanf("%d",&selection);
                 }while(selection<1||selection>3);
                 
                 if(selection==1)
                  {
                      printf("\nthe answer is %d",answer);
                      input_data();/*輸入數據或退出，管理員可輸入密碼*/ 
                  }    
                 if(selection==2)
                      change_password(number);/*修改普通管理員密碼*/ 
                 else
                 {
                      system("pause"); 
                      exit(0);
                 }    
             }
                  
                  
             void congratulate(void)  /*祝賀猜對并問是否繼續*/ 
             {
                 int selection;
                 printf("\n\nCongratulations! You guessed right in %d Guesses!",nbr_of_guesses);
                 printf("\n\nThe number was %d\n\n",number); 
                 do
                 {
                     puts("\nDo you want to try again?");
                     puts("\n1--Yes,I want to try again.");
                     puts("\n2--No,I must leave now.");
                     puts("\nEnter a selection:");
                   
                     scanf("%d",&selection);
                 }while(selection<1||selection>2);
            
                 if(selection==YES)
                     game_introduction();/*游戲介紹，選擇游戲級別或退出*/ 
                 else
                 {
                      system("pause"); 
                      exit(0);
                 }    
             }
                
                    
               void enter_password_name(char *true_password)/*確認超級管理員*/   
               {
                  
                   char *password;               
                   char password_name[31];
                   int  sum=0,flag=0;
                 
                   puts("Oh You are the super Administrator!");
                
                   do
                   { 
                      true_password= PasswordName;
                      puts("Please enter the password_name:");
                      password= gets(password_name);
                      
                      while(*true_password!='\0'||*password!='\0')
                      {
                           if (*password==*true_password)
                           {
                                flag=1;
                                password++;
                                true_password++;
                           }
                          else
                           {
                                flag=0;
                                break;
                           }
                      }
           
                      sum++;
                      if(sum>4)
                      {
                          puts("you lose your password_name!goodbye!");
                          system("pause");
                          exit(0) ;  /*退出游戲*/ 
                      }    
                  }while  (flag==0) ;/*循環輸入確認密碼，直到用戶輸入正確或超過三次，自動退出*/