Question

I made an array and set the values from 1 to 9 in the initializeBoard function, but for some reason when I print the values they come out 0 to 8. Why is this happening? Shouldn’t it print out 1 to 9 since those are the numbers I put in the array in initializeBoard?

int main()
{
    initializeBoard();
    ticTacToeBoard();
}

void initializeBoard()
{
    for (int i = 1; i < 9; i++)
        ticTacBoard[i] = i;
    cout << endl;
}

void ticTacToeBoard ()
{
    for (int y = 0; y < 3; y++)
    {
        for (int x = 0; x < 3; x++)
            cout << ticTacBoard[3 * y + x] << " ";
        cout << endl;
    }
}

Answer 1

You have an off-by-one error. Arrays use zero-based indexing in C++. Your code does not assign a value to the zero^th element of the array.

Try this instead:

for (int i = 0; i < 9; i++)
{
    ticTacBoard[i] = i + 1;
}