# **D1173566小專題 電子雞自己猜數字**
常常可以看到與電腦互動的猜數字遊戲，以往都是電腦設定數字，使用者來猜。但這次比較不一樣的地方是，讓電腦自己來玩這個遊戲。

以下是我設計的程式碼，一起來看看吧。

#include <stdio.h>
#include <stdlib.h>

int title() ; // function prototype
int guessType() ; // function prototype
int guessGame1(int answer, int time) ;
int guessGame2(int ansert, int time) ; // function prototype
void asciiArt(int answer, int time) ;  // function prototype
void asciiArt2(int answer, int time) ; // function prototype
int isCorrect(int answer, int guess, int time) ;
int end() ; // function prototype

int main(){
  	int again = 1 ;
  	while (again != 0){
    	title() ;
    	guessType() ;
    	printf("Do you wanna play again? ( 1=yes , 0=exit )\n") ;
    	scanf("%d", &again) ;
  	}
  	end() ;
  	return 0 ;
}
// end main

int title(){
  	// start game
  	printf("========================================================================\n"
           "I have a number between 1 and 1000.\n"
           "Can you guess my number?\n"); // title
}

int guessType(){
  	int answer ; 
  	int type ;
  	int time = 0 ;
  		answer = 1 + rand() % 1000 ; // randomly generated number
  		printf("What kinds of guessType do you want? ( 1=slow one , 2=fast one )\n") ;
  		scanf("\n%d", &type) ;
  	if (type == 1) { // choose the guessType
    guessGame1(answer, time) ;
  	}
  	else if(type == 2){ // choose the guessType
   		 guessGame2(answer, time) ;
  	}	
}

int guessGame1(int answer, int time){ //guessType1
  	int guess = 0 ;
 	 	printf("========================================================================\n"
               "Please type your first guess.\n") ;
 	// play
  	while (isCorrect(guess, answer, time) != 1){ //keep guessing if the answer is wrong
    	printf("%d\n", guess) ;
    	++guess ;
    	time++ ;
  	}
  	asciiArt(answer, time) ;
}

int guessGame2(int answer, int time){ //guessType2
  	int min = 0, max = 1000, ans = 500 ;
  		printf("========================================================================\n"
  		       "Please type your first guess.\n") ;
  	// play
    	time++	;
  		printf("%d\n", ans)	;
  	int correct = isCorrect(answer, ans, time)	;
  	while (correct != 1){ //keep guessing if the answer is wrong
    if (correct == 0){
      	max = ans - 1 ;
    }
	else if (correct == 2){
    	min = ans + 1 ;
    }
    ans = min + (max - min) / 2 ;
    printf("%d\n", ans) ;
    correct = isCorrect(answer, ans, time) ;
    time++ ;
  	}	
  	asciiArt2(answer, time) ;
}

void asciiArt(int answer, int time){
  	// if the answer is currect show the ascii art
  	printf("====================================================================="
           "===\nI found the currect number !!\nAWESOME!!\n");
  	printf("====================================================================="
           "===\n"
           "                   ,~.                              *    ********  "
           "*******   ********     **     **********\n"
           "                ,-'__ `-,                           *   "
           "**//////**/**////** /**/////     ****   /////**///\n"
           "               {,-'  `. }              ,')          *  **      // "
           "/**   /** /**         **//**      /**\n"
           "              ,( a )   `-.__         ,',')~,        * /**         "
           "/*******  /*******   **  //**     /**\n"
           "            <=.) (         `-.__,==' ' ' '}         * /**    "
           "*****/**///**  /**////   **********    /**\n"
           "              (   )                      /          * //**  "
           "////**/**  //** /**      /**//////**    /**\n"
           "             /`         .-             `\\           *  //******** "
           "/**   //**/********/**     /**    /**\n"
           "            |          (                 }          *   ////////  // "
           "    // //////// //      //     //\n"
           "            \\_,         '.               }\n"
           "               \\_,         '.            }\n"
           "                  '._.     ,_)          /                            "
           "              **   *******   ****** *\n"
           "                     |    /           .'                             "
           "             /**  **/////** /*////** *\n"
           "                      \\   |    _   .-'                              "
           "              /** **     //**/*   /** *\n"
           "                       \\__/;--.||-'                                 "
           "              /**/**      /**/****** *\n"
           "                        _||   _||__   __                             "
           "             /**/**      /**/*//// ** *\n"
           "                 _ __.-` '`)(` `'  ```._)                            "
           "         **  /**//**     ** /*    /** *\n"
           "           jgs  (_`,-   ,-'  `''-.   '-._)                           "
           "        //*****  //*******  /******* *\n"
           "               (  (    /          '.__.'                             "
           "         /////    ///////   /////// *\n"
           "                `''`'--'\n") ;
  	printf("\n\nThe currect number is: %d\n",answer) ; // print the currect number
  	printf("\nGuess Total: %d\n\n", time) ; // show the total of guesses
}

void asciiArt2(int answer, int time){
		//if the answer is currect show the ascii art 
		printf("========================================================================\nI found the currect number !!\nAWESOME!!\n") ;

		printf("========================================================================\n"
			"                                   .-.  .--''` )\n"
			"                                _ |  |/`   .-'`\n"
			"                               ( `\\      /`\n"
			"                               _)   _.  -'._\n"
			"                             /`  .'     .-.-;\n"
			"                             `).'      /  \\  \\\n"
			"                            (`,        \\_o/_o/__\n"
			"                             /           .-''`  ``'-.\n"
			"                             {         /` ,___.--''`\n"
			"                             {   ;     '-. \\ \\\\        *    ********  *******   ********     **     **********\n"
			"           _   _             {   |'-....-`'.\\_\\\\       *   **//////**/**////** /**/////     ****   /////**///\n"
			"          / './ '.           \\   \\          `'`        *  **      // /**   /** /**         **//**      /**\n"
			"       _  \\   \\  |            \\   \\\\                   * /**         /*******  /*******   **  //**     /**\n"
			"      ( '-.J     \\_..----.._ __)   `\\--..__            * /**    *****/**///**  /**////   **********    /**\n"
			"     .-`                    `        `\\    ''--...--.  * //**  ////**/**  //** /**      /**//////**    /**\n"
			"    (_,.--''`/`         .-             `\\       .__ _) *  //******** /**   //**/********/**     /**    /**\n"
			"            |          (                 }    .__ _)   *   ////////  //     // //////// //      //     //\n"
			"            \\_,         '.               }_  - _.'\n"
			"               \\_,         '.            } `'--'\n"
			"                  '._.     ,_)          /                                          **   *******   ****** *\n"
			"                     |    /           .'                                          /**  **/////** /*////** *\n"
			"                      \\   |    _   .-'                                            /** **     //**/*   /** *\n"
			"                       \\__/;--.||-'                                               /**/**      /**/****** *\n"
			"                        _||   _||__   __                                          /**/**      /**/*//// ** *\n"
			"                 _ __.-` '`)(` `'  ```._)                                     **  /**//**     ** /*    /** *\n"
			"           jgs  (_`,-   ,-'  `''-.   '-._)                                   //*****  //*******  /******* *\n"
			"               (  (    /          '.__.'                                      /////    ///////   /////// *\n"
			"                `''`'--'\n") ;
			printf("\n\nThe currect number is: %d\n",answer) ;
      printf("Guess Total: %d\n",time) ;
  }
  
  int isCorrect(int answer, int guess, int time){
  	if (guess < answer){
    	printf("Lower\n") ;
    return 2 ;
  	} 
  	else if (guess > answer){
    	printf("Higher\n") ;
    return 0 ;
  	}
  	else{
    printf("Correct\n") ;
    return 1 ;
  	}
}
  
int end(){
  	printf("====================================================================="
        "===\nHope to see you next time !!"); // exit
}

**我提供兩種猜數字方法**
第一種:最簡單但是最慢的方法(從0開始猜)
第二種:進階一點(夾擠定理)
# 使用最基本的從0開始猜方法
**(每次數字增加1) 逐步的猜出答案**

int guessGame1(int answer, int time){ //guessType1
  	int guess = 0 ;
 	 	printf("========================================================================\n"
               "Please type your first guess.\n") ;
 	// play
  	while (isCorrect(guess, answer, time) != 1){ //keep guessing if the answer is wrong
    	printf("%d\n", guess) ;
    	++guess ;
    	time++ ;
  	}
  	asciiArt(answer, time) ;
}

# 使用較為進階的方法(夾擠定理)
設定最大值及最小值，再利用公式 Answer=Max-(Max-min)/2 和 Answer=min+(Max-min)/2 等公式計算出答案。
透過夾擠定理能較快得知數字的範圍，猜出答案。

int guessGame2(int answer, int time){ //guessType2
  	int min = 0, max = 1000, ans = 500 ;
  		printf("========================================================================\n"
  		       "Please type your first guess.\n") ;
  	// play
    	time++	;
  		printf("%d\n", ans)	;
  	int correct = isCorrect(answer, ans, time)	;
  	while (correct != 1){ //keep guessing if the answer is wrong
    if (correct == 0){
      	max = ans - 1 ;
    }
	else if (correct == 2){
    	min = ans + 1 ;
    }
    ans = min + (max - min) / 2 ;
    printf("%d\n", ans) ;
    correct = isCorrect(answer, ans, time) ;
    time++ ;
  	}	
  	asciiArt2(answer, time) ;
}

以上就是我期中專題製作