c++ connect4

#include <Windows.h>
#include <iostream>
#include<vector>;

#define BLACK 1
#define RED 255

using namespace std;


void display(byte board[7][6]) {
    cout << " 1 | 2 | 3 | 4 | 5 | 6 | 7 |";
    for (int i = 0; i < 6; i++) {
        cout << "\n____________________________\n ";
        for (int j = 0; j < 7; j++) {
            if (!board[j][i]) { cout << " "; }
            else if (board[j][i] == BLACK) { cout << "B"; }
            else { cout << "R";}
            cout << " | ";
        }

    }
    cout << '\n';
}

byte checkwinner(byte board[7][6]) {

    for (int i = 0; i < 6; i++) {
        for (int j = 0; j < 7; j++) {
            if (board[j][i]) {
                if (j + 3 < 7) {//checks left to right
                    if ((board[j][i] + board[j + 1][i] + board[j + 2][i] + board[j + 3][i]) / 4 == BLACK) {
                        return BLACK;
                    }
                    else if ((board[j][i] + board[j + 1][i] + board[j + 2][i] + board[j + 3][i]) / 4 == RED) {
                        return RED;
                    }
                }
                if (i + 3 < 6) {//check from top to bottom
                    if ((board[j][i] + board[j][i+1] + board[j][i+2] + board[j][i+3]) / 4 == BLACK) {
                        return BLACK;
                    }
                    else if ((board[j][i] + board[j][i + 1] + board[j][i + 2] + board[j][i + 3]) / 4 == RED) {
                        return RED;
                    }
                }
                if (j + 3 < 7 && i + 3 < 6) { //diag down and right
                    if ((board[j][i] + board[j+1][i + 1] + board[j+2][i + 2] + board[j+3][i + 3]) / 4 == BLACK) {
                        return BLACK;
                    }
                    else if ((board[j][i] + board[j+1][i + 1] + board[j+2][i + 2] + board[j+3][i + 3]) / 4 == RED) {
                        return RED;
                    }
                }
                if (j - 3 > -1 && i + 3 < 6) {
                    if ((board[j][i] + board[j - 1][i + 1] + board[j - 2][i + 2] + board[j - 3][i + 3]) / 4 == BLACK) {
                        return BLACK;
                    }
                    else if ((board[j][i] + board[j - 1][i + 1] + board[j - 2][i + 2] + board[j - 3][i + 3]) / 4 == RED) {
                        return RED;
                    }
                }

            }
        }

    }
    return 0;
}


bool full(int move,byte board[7][6]) {
    if (move > 0 && move < 8) {
        return !board[move - 1][0];
    }
    return false;

}

void moveLogic(int move, byte player,byte board[7][6]) {
    for (int i = 5; i > -1; i--) {
        if (!board[move - 1][i]) {
            board[move - 1][i] = player;
            break;
        }
    }
}


int main()
{
    byte board[7][6]{ 0 };
    bool flip = true;
    //player 1 is always black 2 = red;

    do {

        display(board);
        int move = 0;
        while (!full(move,board)) {
            cout << " player " << (flip ? 1 : 2) << " please select a move ....\n";
            scanf_s("%d", &move);
        }
        moveLogic(move, flip ? BLACK : RED, board);
        flip = !flip;
    } while (!checkwinner(board));

    display(board);
    cout << "player " << (checkwinner(board) == RED ? "RED " : "BLACK ") << "WINS!!!!!!!!!!";

}