猜单词游戏

/*

Playing a console-based game

To solve the problem, your program must be able to:

Choose a random word to use as the secret word. That word is chosen from a word list, as described in the following paragraph. Keep track of the user’s partially guessed word, which begins as a series of dashes and then updated as correct letters are guessed. Implement the basic control structure and manage the details (ask the user to guess a letter, keep track of the number of guesses remaining, print out the various messages, detect the end of the game, and so forth) */

　　简单说需求就是从一个单词集合中随机选取一个单词， 假设猜想单词school， 就在控制台上输出 _ _ _ _ _ _，根据英语普遍规律，绝大部分的单词都有元音字母，所以从元音字母开始猜比较容易。假设用户猜字母O，单词school中出现了，就在单词上预留的位置中填写此字母，_ _ _ o o _ 当用户们猜测的单词为school中并未出现的字母，则将在控制台中输出最近一次单词的状态。若给定猜测次数内，单词仍未猜出，则系统获胜，若猜出此单词，则为用户获胜。

　　以下给出代码实现：

namespace GuessWord
{
    class Program
    {
        static int wrongGuess, lettersLeft;
        static void Main()
        {
            string wordToGuess = GetWordToGuess();
            char[] maskedWord = GetHiddenLetters(wordToGuess, '-');
            lettersLeft = wordToGuess.Length;
            char userGuess;
            wrongGuess = 3;
            while (wrongGuess > 0 && lettersLeft > 0)
            {
                DisplayCharacters(maskedWord);
                Console.WriteLine("Enter a letter?");
                userGuess = char.Parse(Console.ReadLine());
                maskedWord = CheckGuess(userGuess, wordToGuess, maskedWord);
            }
            Console.WriteLine("Well done! Thanks for playing.");
            Console.ReadLine();
        }

        static string GetWordToGuess()
        {
            Random number = new Random();
            int wordNumber = number.Next(0, 9);
            string[] words = { "picture", "chinese", "school", "question", "include", "simple", "difficult", "understand", "necessary", "support" };
            string selectWord = words[wordNumber];
            return selectWord;
        }

        static char[] GetHiddenLetters(string word, char mask)
        {
            char[] hidden = new char[word.Length];
            for (int i = 0; i < word.Length; i++)
            {
                hidden[i] = mask;
            }
            return hidden;
        }

        static void DisplayCharacters(char[] characters)
        {
            foreach (char letter in characters)
            {
                Console.Write(letter);
            }
            Console.WriteLine();
        }

        static char[] CheckGuess(char letterToCheck, string word, char[] characters)
        {
            if (word.Contains(letterToCheck.ToString()))
            {
                for (int i = 0; i < word.Length; i++)
                {
                    if (word[i] == letterToCheck)
                    {
                        characters[i] = word[i];
                        lettersLeft--;
                    }
                }
            }
            else
            {
                wrongGuess--;
            }
            return characters;
        }
    }
}