C++ 入門指南 V2.00 - 單元 15 範例及練習程式碼



encrypt01.cpp


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// 引入 Encrypt 類別的標頭檔
#include "encrypt01.h"
 
// Encrypt 的建構函數
Encrypt::Encrypt() {
   // 呼叫 setter 設定 code_array
   set_code_array();   
}
 
// 設定 code_array 的 setter 成員函數
void Encrypt::set_code_array() {
   // 設定 a 、 b 值
   int a = 3;
   int b = 5;
 
   // 利用公式建立密碼表字串    
   int x, y, m;
   char c = 'a';
   string s;
   int i;
   for (i = 0; i < 26; i++) {
      x = c;
      y = x * a + b;
      m = y % 26;
      s += m + 97;
      c++;
   }
 
   // 將建立好的密碼表直接設定給成員變數
   code_array = s;
}
 
// 回傳密碼表字串的 getter 成員函數    
string Encrypt::get_code_array() {
   return code_array;
}
 
/* encrypt01.cpp
   Kaiching Chang
   2014-5 */

encrypt_demo01.cpp


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// 引入標準程式庫中的 iostream
#include <iostream>
// 引入 Encrypt 類別的標頭檔
#include "encrypt01.h"
 
// 使用 std 中的兩個名稱
using std::cout; // 標準輸出串流的物件
using std::endl; // 新行符號，等於 '\n'
 
// 程式執行的 main() 函數
int main() {
   // 印出空白一行
   cout << endl;
 
   // 建立 Encrypt 物件
   Encrypt encryptor;
   // 印出密碼表字串
   cout << encryptor.get_code_array()
        << endl << endl;
 
   return 0;
}
  
/* encrypt_demo01.cpp
   Kaiching Chang
   2014-5 */

exercise1501.cpp


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#include <iostream>
  
using namespace std;
 
// 將整數拆成整數陣列的函數
void ArrayNumber(int array[], int number) {
   int i;
   int j = 1000;
   int temp = number;
   for (i = 0; i < 4; i++) {
      array[i] = temp / j;
      temp %= j;
      j /= 10;
   }
}
  
int main(void) {
   int answer = 1234;
   int answer_array[4];
   ArrayNumber(answer_array, answer);
    
   int guess;
   cin >> guess;
   int guess_array[4];
   ArrayNumber(guess_array, guess);
    
   int number = 0;
   for (int i = 0; i < 4; i++) {
      if (guess_array[i] == answer_array[i]) {
         number++;
      }
   }
    
   if (number == 4) {
      cout << "Right!!" << endl;
   }
   else {
      cout << "Wrong!!" << endl;
   }
}
 
/* 檔名: exercise1501.cpp
   作者: Kaiching Chang
   時間: 2014-5 */

exercise1502.cpp


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#include <iostream>
  
using namespace std;
 
// 將整數拆成整數陣列的函數
void ArrayNumber(int array[], int number) {
   int i;
   int j = 1000;
   int temp = number;
   for (i = 0; i < 4; i++) {
      array[i] = temp / j;
      temp %= j;
      j /= 10;
   }
}
 
// 測試猜測與答案是否相等
bool EqualTest(int array1[], int array2[]) {
   int number = 0;
   for (int i = 0; i < 4; i++) {
      if (array1[i] == array2[i]) {
         number++;
      }
   }
    
   if (number == 4) {
      return true;
   }
   else {
      return false;
   }
}
  
int main(void) {
   int answer = 1234;
   int answer_array[4];
   ArrayNumber(answer_array, answer);
    
   int guess;
   cin >> guess;
   int guess_array[4];
   ArrayNumber(guess_array, guess);
 
   if (EqualTest(answer_array, guess_array)) {
      cout << "Right!!" << endl;
   }
   else {
      cout << "Wrong!!" << endl;
   }
}
 
/* 檔名: exercise1502.cpp
   作者: Kaiching Chang
   時間: 2014-5 */

exercise1503.cpp


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#include <iostream>
  
using namespace std;
 
// 將整數拆成整數陣列的函數
void ArrayNumber(int array[], int number) {
   int i;
   int j = 1000;
   int temp = number;
   for (i = 0; i < 4; i++) {
      array[i] = temp / j;
      temp %= j;
      j /= 10;
   }
}
 
// 測試猜測與答案是否相等
bool EqualTest(int array1[], int array2[]) {
   int number = 0;
   for (int i = 0; i < 4; i++) {
      if (array1[i] == array2[i]) {
         number++;
      }
   }
    
   if (number == 4) {
      return true;
   }
   else {
      return false;
   }
}
 
// 計算 A 、 B 值
void ABCounter(int array1[], int array2[], int array3[]) {
   int a = 0;
   int b = 0;
   for (int i = 0; i < 4; i++) {
      for (int j = 0; j < 4; j++) {
         if (array1[i] == array2[j]) {
            if (i == j) {
               a++;
            }
            else {
               b++;
            }
         }
      }
   }
    
   array3[0] = a;
   array3[1] = b;
}
  
int main(void) {
   int answer = 1234;
   int answer_array[4];
   ArrayNumber(answer_array, answer);
    
   int guess;
   cin >> guess;
   int guess_array[4];
   ArrayNumber(guess_array, guess);
    
   int ab_array[2];
   ABCounter(answer_array, guess_array, ab_array);
 
   if (answer == guess) {
      cout << "Right!!" << endl;
   }
   else {
      cout << "Wrong!! " << ab_array[0] << "A" << ab_array[1] << "B!!" << endl;
   }
}
 
/* 檔名: exercise1503.cpp
   作者: Kaiching Chang
   時間: 2014-5 */

exercise1504.cpp


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#include <iostream>
  
using namespace std;
 
// 將整數拆成整數陣列的函數
void ArrayNumber(int array[], int number) {
   int i;
   int j = 1000;
   int temp = number;
   for (i = 0; i < 4; i++) {
      array[i] = temp / j;
      temp %= j;
      j /= 10;
   }
}
 
// 測試猜測與答案是否相等
bool EqualTest(int array1[], int array2[]) {
   int number = 0;
   for (int i = 0; i < 4; i++) {
      if (array1[i] == array2[i]) {
         number++;
      }
   }
    
   if (number == 4) {
      return true;
   }
   else {
      return false;
   }
}
 
// 計算 A 、 B 值
void ABCounter(int array1[], int array2[], int array3[]) {
   int a = 0;
   int b = 0;
   for (int i = 0; i < 4; i++) {
      for (int j = 0; j < 4; j++) {
         if (array1[i] == array2[j]) {
            if (i == j) {
               a++;
            }
            else {
               b++;
            }
         }
      }
   }
    
   array3[0] = a;
   array3[1] = b;
}
  
int main(void) {
   int answer = 1234;
   int answer_array[4];
   ArrayNumber(answer_array, answer);
    
   while (true) {
      int guess;
      cin >> guess;
      int guess_array[4];
      ArrayNumber(guess_array, guess);
     
      int ab_array[2];
      ABCounter(answer_array, guess_array, ab_array);
 
      if (answer == guess) {
         cout << "Right!!" << endl;
         break;
      }
      else {
         cout << "Wrong!! " << ab_array[0] << "A" << ab_array[1] << "B!!" << endl;
      }
   }
}
 
/* 檔名: exercise1504.cpp
   作者: Kaiching Chang
   時間: 2014-5 */

exercise1505.cpp


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#include <iostream>
  
using namespace std;
 
// 將整數拆成整數陣列的函數
void ArrayNumber(int array[], int number) {
   int i;
   int j = 1000;
   int temp = number;
   for (i = 0; i < 4; i++) {
      array[i] = temp / j;
      temp %= j;
      j /= 10;
   }
}
 
// 測試猜測與答案是否相等
bool EqualTest(int array1[], int array2[]) {
   int number = 0;
   for (int i = 0; i < 4; i++) {
      if (array1[i] == array2[i]) {
         number++;
      }
   }
    
   if (number == 4) {
      return true;
   }
   else {
      return false;
   }
}
 
// 計算 A 、 B 值
void ABCounter(int array1[], int array2[], int array3[]) {
   int a = 0;
   int b = 0;
   for (int i = 0; i < 4; i++) {
      for (int j = 0; j < 4; j++) {
         if (array1[i] == array2[j]) {
            if (i == j) {
               a++;
            }
            else {
               b++;
            }
         }
      }
   }
    
   array3[0] = a;
   array3[1] = b;
}
  
int main(void) {
   int answer = 1234;
   int answer_array[4];
   ArrayNumber(answer_array, answer);
    
   int times = 0;
   while (true) {
      times++;
    
      int guess;
      cin >> guess;
      int guess_array[4];
      ArrayNumber(guess_array, guess);
     
      int ab_array[2];
      ABCounter(answer_array, guess_array, ab_array);
 
      if (answer == guess) {
         cout << "Right!! You guess " << times << " times!!" << endl;
         break;
      }
      else {
         cout << "Wrong!! " << ab_array[0] << "A" << ab_array[1] << "B!!" << endl;
      }
   }
}
 
/* 檔名: exercise1505.cpp
   作者: Kaiching Chang
   時間: 2014-5 */

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