help needed for my connect four programme.

[KatherineNguyen]

hi there. katy here.

I am doing a "Connect 4" program for my assignment and i've done the main part, which I should not change (my lecturer told me not to). .can anyone help me to convert this function below to suit my program??i need my program to have a verticalwin/horizontalwin and a diagonalwin function. and also when all the tiles is full,i want my program to give an output such as "the game is a tie".please help me.i'm new here.so forgive me if i'm wrong.
the function that i need modified is:

bool check(int a, int b)
{
    int vertical = 1;//(|)
    int horizontal = 1;//(-)
    int diagonal1 = 1;//(\)
    int diagonal2 = 1;//(/)
    char player = place[a][b];
    int i;//vertical
    int ii;//horizontal

    //check for vertical(|)
    for(i = a +1;place[i][b] == player && i <= 5;i++,vertical++);//Check down
    for(i = a -1;place[i][b] == player && i >= 0;i--,vertical++);//Check up
    if(vertical >= 4)return true;

    //check for horizontal(-)
    for(ii = b -1;place[a][ii] == player && ii >= 0;ii--,horizontal++);//Check left
    for(ii = b +1;place[a][ii] == player && ii <= 6;ii++,horizontal++);//Check right
    if(horizontal >= 4) return true;

    //check for diagonal 1 (\)
    for(i = a -1, ii= b -1;place[i][ii] == player && i>=0 && ii >=0; diagonal1 ++, i --, ii --);//up and left
    for(i = a +1, ii = b+1;place[i][ii] == player && i<=5 && ii <=6;diagonal1 ++, i ++, ii ++);//down and right
    if(diagonal1 >= 4) return true;

    //check for diagonal 2(/)
    for(i = a -1, ii= b +1;place[i][ii] == player && i>=0 && ii <= 6; diagonal2 ++, i --, ii ++);//up and right
    for(i = a +1, ii= b -1;place[i][ii] == player && i<=5 && ii >=0; diagonal2 ++, i ++, ii --);//up and left
    if(diagonal2 >= 4) return true;

    return false;
}

i need it to suit my current programme.please help.

#include <iostream>

  #include <fstream>

  using namespace std;

  void drawboard (ostream &, char [6][7], int, int);

  int humanmove (int player, char board [6][7], int rows, int columns);

  int verticalwin (char board[6][7], int rows, int columns, int moverow, int movecolumn);

  int main ()

  {

cout<< "Connect Four is a two-player game in which the players first ";
cout<< " choose a letter   and then take turns dropping their letters from the top into a seven-column,";

cout<< "    six-row vertically-suspended grid.";

cout<< " The pieces fall straight down, occupying the next available space within the column. ";

cout<< " The objective of the game is to connectfour of one's own discs of the same color next to each other vertically,        horizontally, or diagonally before one's opponent can do so. ";

ofstream outfile;
outfile.open("gamelog01.txt");
char board[6][7] = {0};

int player;
int row;
int col;
int times;
bool win; 
int moverow;
int movecolumn;

drawboard(cout, board,6,7);

while (player = 1)
{
    humanmove(player, board, 6, 7);
    verticalwin(board, 6, 7, moverow, movecolumn);

    player = 2;
    humanmove(player, board, 6, 7);
    verticalwin(board, 6, 7, moverow, movecolumn);
}

outfile.close();
return 0;
}

//-------------------------------------------------------------

void drawboard  (ostream & out, char b[6][7], int r, int c)

{

out << endl;
for (int x = r-1; x >= 0; x--)
{
    out << "  |";

    for (int y = 0; y < c-1; y++)
        out << "----";

    out << "---|" << endl << x << " |";

    for (int y = 0; y < c-1; y++)
        if (b[x][y] == 0)
            out << "   |";
        else
            out << " " << b[x][y] << " |";

    if (b[x][c-1] == 0)
        out << "   |" << endl;
    else
        out << " " << b[x][c-1] << " |" << endl;
}

out << "  |";

for (int y = 0; y < c-1; y++)
    out << "----";

out << "---|" << endl; 
out << " ";

for (int y = 0; y < c; y++)
    out << "   " << y;

out << endl;
}

int humanmove  (int player, char board[][7], int rows, int columns)

{

char symbol;

if(player == 1)
    symbol = 'X';
else
    symbol = 'O';

int col;
cout << "What column would Player " << player << " like to play in?: " ;
cin >> col;

while ((col < 0) || (col >= columns))
{
    cout << "Invalid selection. There aren't that many columns. Please enter a different    column number: ";
    cin >> col;
}

int row;
for(row = 5; row >= 0; row--)
{ 
    if(board[row][col] != 0)
        break;
}

board[row+1][col] = symbol;

if (row == 'X' || row == 'O')
{
    cout << "Column " << col << " is full. Please choose another: ";
    cin >> col;
}
else 
{
    drawboard(cout, board, 6, 7);
}
}

int verticalwin  (char board[6][7], int rows, int columns, int moverow, int movecolumn)

{

}