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/**********************************************************************
*
* Project 3: Bulls and Cows
*
* Author: Dreyth
* Date: 22 February 2012
*
* This is my fourth project so far. Its purpose is to construct a
* version of a Bulls & Cows game. A correct guess in the correct
* place will show a 1. An incorrect guess will show a 0.
*
**********************************************************************/
#include <bjarne/std_lib_facilities.h>
// Function protoypes below.
void offer_help();
bool play_one_game(vector<int> solution);
bool play_again();
int main()
{
// Seed the random number generator (RNG).
srand(time(0));
// Call the offer_help function.
offer_help();
// Use a boolean variable to set up a loop later.
bool trial = true;
// Set up the outside loop with the previously mentioned boolean variable.
while(trial) {
// Set up a vector containing the solution.
vector<int> solution(4);
for (int i = 0; i < solution.size(); i++)
solution[i] = randint(10);
// This will be used to replay a game.
bool won_game = play_one_game(solution);
// If bool won_game is true, then the user will be prompted to
// play again or not.
if (won_game)
cout << "Congratulations! You won the game\n ";
else {
cout << "You gave up! The solution was: \n";
for (int i = 0; i < solution.size(); i++)
cout << " " << solution[i];
cout << endl;
}
// If user decides to not play again, then trial is false and
// we will not re-enter the outside loop.
trial = play_again();
}
}
void offer_help()
{
// Prompt the user for help.
cout << "Need help (0/1)? ";
int help;
cin >> help;
// Display help message if user input a 1.
cout << "I will generate a pattern of 4 numbers, each in the range 0 through 9." << endl
<< "You will give a series of guesses of this pattern." << endl
<< "Each guess that you enter will be a line containing 4 integers," << endl
<< "separated by spaces, such as" << endl
<< " 2 4 7 1" << endl
<< "For each guess, I will echo back a list consisting of" << endl
<< "0's and 1's, with a 1 in a given positihon meaning that" << endl
<< "you guessed the number, and a zero meaning that you didn't." << endl
<< "For example, if the actual solution was 2 6 3 1, I'll respond" << endl
<< " 1 0 0 1" << endl
<< "See how many guesses it takes you to get to the solution!" << endl << endl
<< "If you want to give up, type a negative number for one of" << endl
<< "your guesses, and we'll tell you what the pattern was." << endl;
}
bool play_one_game(vector<int> solution)
{
// Set up the integer showing what guess the user is on.
int trialnum = 1;
// Set up a vector containing the user's guesses.
vector<int> guess(4);
for (int i = 0; i < solution.size(); i++)
// Set up inside loop for guesses.
while(true){
cout << "Guess #" << trialnum++ << "? ";
for (int i = 0; i < solution.size(); i++)
cin >> guess[i];
// Take care of correct or incorrect guesses.
for (int i = 0; i < solution.size(); i++)
if (guess[i] == solution[i])
cout << "1 ";
else
cout << "0 ";
cout << endl;
// If all is correct, play_one_game will be true.
if(guess == solution)
return true;
}
}
bool play_again() {
int playagain;
cout << "Would you like to play again (0/1)?";
cin >> playagain;
if (playagain == 1)
return true;
else
return false;
}
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