4.8.3  变量与常量的初始化

接下来是程序的main()函数，并且为游戏初始化一些变量和常量。

int main()  
{  
//setup  
const int MAX_WRONG = 8; //maximum number of incorrect guesses allowed  
vector<string> words; //collection of possible words to guess  
words.push_back("GUESS");  
words.push_back("HANGMAN");  
words.push_back("DIFFICULT");  
srand(static_cast<unsigned int>(time(0)));  
random_shuffle(words.begin(), words.end());  
const string THE_WORD = words[0];                               //word to guess  
int wrong = 0;                                                                                                              //number of incorrect guesses  
string soFar(THE_WORD.size(), '-');                     //word guessed so far  
string used = "";                                                                                                   //letters already guessed  
cout << "Welcome to Hangman. Good luck!\n";