You should start by downloading the connectfour_v2.cpp program (http://www.sqrlab.ca/exercises/csci1060u-f18/connectfour_v2.cpp). This program is almost finished but is missing most of the isWinner() function which you need to complete. bool isWinner(bool isPlayer1) { char currTile; if (isPlayer1) { currTile = P1; } else { currTile = P2; } //Check if current player has 4 pieces horizontally for (int r = 0; r < ROWS; r++) { int counter = 0; //reset counter to zero for each row for (int c = 0; c < COLS; c++) { if(board[c][r] == currTile) { counter++; } else { counter = 0; } if (counter == 4) { return true; //game won! } } } //Check if current player has 4 pieces vertically //Check if current player has 4 pieces diagonally (both //ways) return false; }

this is the main function

also it should all fully commented .

#include  #include  using namespace std; //Global variables for representing the game board const int COLS = 7; const int ROWS = 6; char board[COLS][ROWS]; //2D array of 7x6 //Global constants for game pieces const char EMP = '-'; const char P1 = 'X'; const char P2 = 'O'; //initializes a connect4 board to contain //all empty cells void initializeBoard(); //Display contents of the board void displayBoard(); //Add one piece to the Board bool addPiece(int c, bool isPlayer1); //Checks if a given player has won bool isWinner(bool isPlayer1); int main() { //Initialize game play bool PlayerOne = true; bool gameWon = false; int totalMoves = 0; const int MAX_MOVES = ROWS * COLS; initializeBoard(); displayBoard(); //Create a game play loop while ((totalMoves < MAX_MOVES) && (!gameWon)) { bool validMove = false; int columnToPlay = 0; //ask current player for a column until a valid move //is chosen while (!validMove) { cout << "Player "; if (PlayerOne) { cout << "1"; } else { cout << "2"; } cout << " - Select a column (0-" << (COLS-1) << ") to play: "; cin >> columnToPlay; validMove = addPiece(columnToPlay, PlayerOne); if (!validMove) { cout << "Column full. Try again." << endl; } } totalMoves++; displayBoard(); gameWon = isWinner(PlayerOne); //Switch Player if (!gameWon){ PlayerOne = !PlayerOne; } } if (gameWon) { cout << "Congratulations Player "; if (PlayerOne) { cout << "1"; } else { cout << "2"; } cout << ". You've won Connect Four!!!!" << endl; } else if (totalMoves == MAX_MOVES) { cout << "Game over! No moves remaining." << endl; } return 0; } void initializeBoard() { for (int c = 0; c < COLS; c++) { for (int r = 0; r < ROWS; r++) { board[c][r] = EMP; } } } void displayBoard() { cout << endl << "Connect 4 Board:" << endl; //Display board one row at a time for (int r = 0; r < ROWS; r++) { //For each row display all of the columns for (int c = 0; c < COLS; c++) { cout << board[c][r] << " "; } //After each row output newline character cout << endl; } for (int c = 0; c < COLS; c++) { cout << c << " "; } cout << endl << endl; } bool addPiece(int c, bool isPlayer1) { //check if column c is full if (board[c][0] != EMP) { return false; } else { //add piece to lowest unoccupied slot in column c for (int r = (ROWS-1); r >= 0; r--) { if (board[c][r] == EMP) { if (isPlayer1) { board[c][r] = P1; } else { board[c][r] = P2; } break; } } return true; } } bool isWinner(bool isPlayer1) { char currTile; if (isPlayer1) { currTile = P1; } else { currTile = P2; } //Check if current player has 4 pieces horizontally for (int r = 0; r < ROWS; r++) { int counter = 0; //reset counter to zero for each row for (int c = 0; c < COLS; c++) { if(board[c][r] == currTile) { counter++; } else { counter = 0; } if (counter == 4) { return true; //game won! } } } //Check if current player has 4 pieces vertically //Check if current player has 4 pieces diagonally (both ways) return false; }