Blur

// Blur image
void blur(int height, int width, RGBTRIPLE image[height][width])
{
    int redAvg;
    int blueAvg;
    int greenAvg;

    for (int r = 0; r < height - 1; r++) //For each row
    {
        for (int c = 0; c < width - 1; c++) //Each individual pixel
        {
            redAvg = (int) (image[r - 1][c - 1].rgbtRed + image[r - 1][c].rgbtRed + image[r - 1][c + 1].rgbtRed
                    + image[r][c - 1].rgbtRed + image[r][c].rgbtRed + image[r][c + 1].rgbtRed
                    + image[r + 1][c - 1].rgbtRed + image[r + 1][c].rgbtRed + image[r + 1][c + 1].rgbtRed) / 9;

            greenAvg = (int) (image[r - 1][c - 1].rgbtGreen + image[r - 1][c].rgbtGreen + image[r - 1][c + 1].rgbtGreen
                    + image[r][c - 1].rgbtGreen + image[r][c].rgbtGreen + image[r][c + 1].rgbtGreen
                    + image[r + 1][c - 1].rgbtGreen + image[r + 1][c].rgbtGreen + image[r + 1][c + 1].rgbtGreen) / 9;

            blueAvg = (int) (image[r - 1][c - 1].rgbtBlue + image[r - 1][c].rgbtBlue + image[r - 1][c + 1].rgbtBlue
                    + image[r][c - 1].rgbtBlue + image[r][c].rgbtBlue + image[r][c + 1].rgbtBlue
                    + image[r + 1][c - 1].rgbtBlue + image[r + 1][c].rgbtBlue + image[r + 1][c + 1].rgbtBlue) / 9;

            image[r][c].rgbtRed = redAvg;
            image[r][c].rgbtGreen = greenAvg;
            image[r][c].rgbtBlue = blueAvg;

        }

    }




    return;
}