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#include <iostream> #include <vector> #include <ctime> #include <cstdlib> // Constants for the game const int GRID_SIZE = 4; // 4x4 grid const int NUM_PAIRS = (GRID_SIZE * GRID_SIZE) / 2; // Function prototypes void initializeBoard(std::vector<std::vector<char>>& board, std::vector<std::vector<char>>& displayBoard); void displayBoard(const std::vector<std::vector<char>>& board, const std::vector<std::vector<char>>& displayBoard); bool isMatch(const std::vector<std::vector<char>>& board, int x1, int y1, int x2, int y2); bool isBoardComplete(const std::vector<std::vector<char>>& displayBoard); int main() { std::vector<std::vector<char>> board(GRID_SIZE, std::vector<char>(GRID_SIZE)); std::vector<std::vector<char>> displayBoard(GRID_SIZE, std::vector<char>(GRID_SIZE, '*')); initializeBoard(board, displayBoard); int x1, y1, x2, y2; bool matched; int attempts = 0; while (!isBoardComplete(displayBoard)) { displayBoard(displayBoard, displayBoard); std::cout << "Enter coordinates of the first card (row and column): "; std::cin >> x1 >> y1; std::cout << "Enter coordinates of the second card (row and column): "; std::cin >> x2 >> y2; if (x1 < 0 || x1 >= GRID_SIZE || y1 < 0 || y1 >= GRID_SIZE || x2 < 0 || x2 >= GRID_SIZE || y2 < 0 || y2 >= GRID_SIZE || (x1 == x2 && y1 == y2)) { std::cout << "Invalid input. Try again.\n"; continue; } if (isMatch(board, x1, y1, x2, y2)) { std::cout << "It's a match!\n"; displayBoard[x1][y1] = board[x1][y1]; displayBoard[x2][y2] = board[x2][y2]; } else { std::cout << "Not a match. Try again.\n"; } attempts++; } displayBoard(displayBoard, displayBoard); std::cout << "Congratulations! You matched all pairs in " << attempts << " attempts.\n"; return 0; } void initializeBoard(std::vector<std::vector<char>>& board, std::vector<std::vector<char>>& displayBoard) { std::vector<char> cards; for (int i = 0; i < NUM_PAIRS; ++i) { cards.push_back('A' + i); cards.push_back('A' + i); } std::srand(std::time(0)); std::random_shuffle(cards.begin(), cards.end()); for (int i = 0; i < GRID_SIZE; ++i) { for (int j = 0; j < GRID_SIZE; ++j) { board[i][j] = cards[i * GRID_SIZE + j]; } } } void displayBoard(const std::vector<std::vector<char>>& board, const std::vector<std::vector<char>>& displayBoard) { std::cout << " "; for (int j = 0; j < GRID_SIZE; ++j) { std::cout << j << ' '; } std::cout << '\n'; for (int i = 0; i < GRID_SIZE; ++i) { std::cout << i << ' '; for (int j = 0; j < GRID_SIZE; ++j) { std::cout << displayBoard[i][j] << ' '; } std::cout << '\n'; } } bool isMatch(const std::vector<std::vector<char>>& board, int x1, int y1, int x2, int y2) { return board[x1][y1] == board[x2][y2]; } bool isBoardComplete(const std::vector<std::vector<char>>& displayBoard) { for (int i = 0; i < GRID_SIZE; ++i) { for (int j = 0; j < GRID_SIZE; ++j) { if (displayBoard[i][j] == '*') { return false; } } } return true; } |
Explanation:
- Initialization:
initializeBoard: Sets up the game board with pairs of matching cards. Cards are shuffled and placed randomly in the grid.displayBoard: Prints the current state of the board with hidden cards represented by'*'and revealed cards showing their actual values.
- Game Loop:
- The main loop runs until all cards are matched (i.e., the board is complete).
- Players are prompted to enter coordinates for two cards they wish to flip.
isMatch: Checks if the two selected cards match. If they do, the cards remain visible; otherwise, they stay hidden.
- Completion Check:
isBoardComplete: Checks if all cards have been matched by ensuring there are no'*'characters left.