fork(1) download 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <time.h>
  4. #include <string.h>
  5. #include <ctype.h>
  6. #include <stdbool.h>
  7.  
  8. void generateAnswer(int answer[]) 
  9. {
  10.     bool used[10] = {false};
  11.     int count = 0;
  12.     while (count < 4) 
  13.     {
  14.         int digit = rand() % 10;
  15.         if (!used[digit]) 
  16.         {
  17.             used[digit] = true;
  18.             answer[count++] = digit;
  19.         }
  20.     }
  21. }
  22.  
  23. bool isValidInput(char input[]) 
  24. {
  25.     if (strlen(input) != 4) return false;
  26.  
  27.     bool used[10] = {false};
  28.     for (int i = 0; i < 4; i++) 
  29.     {
  30.         if (!isdigit(input[i])) return false;
  31.         int digit = input[i] - '0';
  32.         if (used[digit]) return false;
  33.         used[digit] = true;
  34.     }
  35.     return true;
  36. }
  37.  
  38. bool getGuess(int guess[]) 
  39. {
  40.     char input[100];
  41.  
  42.     if (scanf("%s", input) == EOF) 
  43.     {
  44.         return false; 
  45.     }
  46.  
  47.     if (!isValidInput(input)) 
  48.     {
  49.         return false; 
  50.     }
  51.  
  52.     for (int i = 0; i < 4; i++) 
  53.     {
  54.         guess[i] = input[i] - '0';
  55.     }
  56.  
  57.     return true;
  58. }
  59.  
  60. void checkAB(int answer[], int guess[], int* A, int* B) 
  61. {
  62.     *A = 0;
  63.     *B = 0;
  64.  
  65.     for (int i = 0; i < 4; i++) 
  66.     {
  67.         if (guess[i] == answer[i])
  68.         {
  69.             (*A)++;
  70.         } else 
  71.         {
  72.             for (int j = 0; j < 4; j++) 
  73.             {
  74.                 if (guess[i] == answer[j] && i != j) 
  75.                 {
  76.                     (*B)++;
  77.                     break;
  78.                 }
  79.             }
  80.         }
  81.     }
  82. }
  83.  
  84. bool playAgain() 
  85. {
  86.     char choice;
  87.     printf("是否再玩一次遊戲？(y/n): ");
  88.     scanf(" %c", &choice); 
  89.     return (choice == 'y' || choice == 'Y');
  90. }
  91.  
  92. int main() 
  93. {
  94.     int answer[4], guess[4];
  95.     int A = 0, B = 0;
  96.     int attempts = 0;
  97.  
  98.     srand(time(NULL)); 
  99.  
  100.     do 
  101.     {
  102.         generateAnswer(answer);
  103.         A = 0; B = 0; attempts = 0; 
  104.  
  105.         while (A != 4) 
  106.         {
  107.             if (!getGuess(guess)) 
  108.             {
  109.                 printf("輸入錯誤或輸入結束。\n");
  110.                 break;
  111.             }
  112.             checkAB(answer, guess, &A, &B);
  113.             printf("%dA%dB\n", A, B);
  114.             attempts++;
  115.         }
  116.  
  117.         if (A == 4) 
  118.         {
  119.             printf("你猜對了！總共猜了 %d 次～\n", attempts);
  120.         }
  121.  
  122.     } while (playAgain()); 
  123.  
  124.     printf("感謝遊玩！\n");
  125.  
  126.     return 0;
  127. }
Success #stdin #stdout 0s 5288KB
comments (?)
stdin 
1234
stdout 
1A0B
輸入錯誤或輸入結束。
是否再玩一次遊戲？(y/n): 感謝遊玩！
https://ideone.com/7NL9fR
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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