anagram.cpp

C++大学简明教程,解压就行没有密码。希望对大家有用

// Exercise 19.13: Anagram.cpp
// Application provides an anagram game to users.
#include <iostream> // required to perform C++ stream I/O
#include <string>   // required to access string functions
#include <ctime>    // contains prototype for function time

// contains function prototypes for functions srand and rand
#include <cstdlib>

using namespace std; // for accessing C++ Standard Library members

// array of words to be scrambled
const string ANAGRAM_LIST[] = { "class", "function",
   "member", "stream", "program", "application", "basic",
   "debugger", "database", "files", "inheritance", "assembly",
   "multimedia", "enumeration", "pointers", "arrays", "strings",
   "references", "manipulator", "structures" };

// function prototype
int generateAnagram();

// function main begins program execution
int main ()
{
   // define string variable to store user's guess
   string text;

   // randomize random number generator using current time
   srand( time( 0 ) );

   // select anagram and display scrambled word
   int randomNumber = generateAnagram(); // returns anagram's index

   // repeat while user has not guessed correctly
   do
   {
      // prompt user for and input guess
      cout << "Enter guess (Hit Enter to exit): ";
      getline( cin, text ); // get guess

      // if the answer is correct
      if ( text == ANAGRAM_LIST[ randomNumber ] )
      {
         cout << "\nYou are Correct!" << endl;

         randomNumber = generateAnagram(); // generate next word
      } // end if
      else if ( text.empty() ) // exit program if
      {
         cout << "\nGood bye!\n" << endl;
      } // end else if
      else // answer is incorrect
      {
         cout << "\nWrong answer. Try again!\n" << endl;
      } // end else

   }  // end do...while
   while ( !text.empty() );

   return 0; // indicate that program ended successfully

} // end function main

// scramble random word and display it
int generateAnagram()
{
   // generate new random number
   int randomNumber = rand() % 20;

   // select new word from array with random index
   string scrambled = ANAGRAM_LIST[ randomNumber ];

   // generate new random index
   int randomIndex = rand() % scrambled.length();

} // end function generateAnagram


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