This is my code for the blur filter in the pset 4. First I used the average for the corner pixels, then I used a loop for the average of the first and last row and columns and then a nested loop for the rest of the cells. It compiles ok, but when I use it, it causes a segmentation fault, could anyone help me please?
void blur(int height, int width, RGBTRIPLE image[height][width])
{
RGBTRIPLE temp[height][width]; //array for storing a temporary copy
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
temp[i][j] = image[i][j]; //copying the data in the temporary filter
}
}
//Left top corner
image[0][0].rgbtBlue = (int) round((temp[0][0].rgbtBlue + temp[0][1].rgbtBlue + temp[1][0].rgbtBlue + temp[1][1].rgbtBlue) / 4);
image[0][0].rgbtGreen = (int) round((temp[0][0].rgbtGreen + temp[0][1].rgbtGreen + temp[1][0].rgbtGreen + temp[1][1].rgbtGreen) / 4);
image[0][0].rgbtRed = (int) round((temp[0][0].rgbtRed + temp[0][1].rgbtRed + temp[1][0].rgbtRed + temp[1][1].rgbtRed) / 4);
//Right top corner
image[0][width].rgbtBlue = (int) round((temp[0][width].rgbtBlue + temp[0][width - 1].rgbtBlue + temp[1][width].rgbtBlue + temp[1][width - 1].rgbtBlue) / 4);
image[0][width].rgbtGreen = (int) round((temp[0][width].rgbtGreen + temp[0][width - 1].rgbtGreen + temp[1][width].rgbtGreen + temp[1][width - 1].rgbtGreen) / 4);
image[0][width].rgbtRed = (int) round((temp[0][width].rgbtRed + temp[0][width - 1].rgbtRed + temp[1][width].rgbtRed + temp[1][width - 1].rgbtRed) / 4);
//Left bottom corner
image[height][0].rgbtBlue = (int) round((temp[height][0].rgbtBlue + temp[height][1].rgbtBlue + temp[height - 1][0].rgbtBlue + temp[height - 1][1].rgbtBlue) / 4);
image[height][0].rgbtGreen = (int) round((temp[height][0].rgbtGreen + temp[height][1].rgbtGreen + temp[height - 1][0].rgbtGreen + temp[height - 1][1].rgbtGreen) / 4);
image[height][0].rgbtRed = (int) round((temp[height][0].rgbtRed + temp[height][1].rgbtRed + temp[height - 1][0].rgbtRed + temp[height - 1][1].rgbtRed) / 4);
//Right bottom corner
image[height][width].rgbtBlue = (int) round((temp[height][width].rgbtBlue + temp[height][width - 1].rgbtBlue + temp[height - 1][width].rgbtBlue + temp[height - 1][width - 1].rgbtBlue) / 4);
image[height][width].rgbtGreen = (int) round((temp[height][width].rgbtGreen + temp[height][width - 1].rgbtGreen + temp[height - 1][width].rgbtGreen + temp[height - 1][width - 1].rgbtGreen) / 4);
image[height][width].rgbtRed = (int) round((temp[height][width].rgbtRed + temp[height][width - 1].rgbtRed + temp[height - 1][width].rgbtRed + temp[height - 1][width - 1].rgbtRed) / 4);
//First row
for (int i = 1; i < width - 1; i++)
{
image[0][i].rgbtBlue = (int) round((temp[0][i - 1].rgbtBlue + temp[0][i].rgbtBlue + temp[0][i + 1].rgbtBlue + temp[1][i - 1].rgbtBlue + temp[1][i].rgbtBlue + temp[1][i + 1].rgbtBlue) / 6);
image[0][i].rgbtGreen = (int) round((temp[0][i - 1].rgbtGreen + temp[0][i].rgbtGreen + temp[0][i + 1].rgbtGreen + temp[1][i - 1].rgbtGreen + temp[1][i].rgbtGreen + temp[1][i + 1].rgbtGreen) / 6);
image[0][i].rgbtRed = (int) round((temp[0][i - 1].rgbtRed + temp[0][i].rgbtRed + temp[0][i + 1].rgbtRed + temp[1][i - 1].rgbtRed + temp[1][i].rgbtRed + temp[1][i + 1].rgbtRed) / 6);
}
//Last row
for (int i = 1; i < width - 1; i++)
{
image[width][i].rgbtBlue = (int) round((temp[width][i - 1].rgbtBlue + temp[width][i].rgbtBlue + temp[width][i + 1].rgbtBlue + temp[width - 1][i - 1].rgbtBlue + temp[width - 1][i].rgbtBlue + temp[width - 1][i + 1].rgbtBlue) / 6);
image[width][i].rgbtGreen = (int) round((temp[width][i - 1].rgbtGreen + temp[width][i].rgbtGreen + temp[width][i + 1].rgbtGreen + temp[width - 1][i - 1].rgbtGreen + temp[width -1][i].rgbtGreen + temp[width - 1][i + 1].rgbtGreen) / 6);
image[width][i].rgbtRed = (int) round((temp[width][i - 1].rgbtRed + temp[width][i].rgbtRed + temp[width][i + 1].rgbtRed + temp[width - 1][i - 1].rgbtRed + temp[width - 1][i].rgbtRed + temp[width - 1][i + 1].rgbtRed) / 6);
}
//First column
for (int i = 1; i < height - 1; i ++)
{
image[i][0].rgbtBlue = (int) round((temp[i - 1][0].rgbtBlue + temp[i][0].rgbtBlue + temp[i + 1][0].rgbtBlue + temp[i - 1][1].rgbtBlue + temp[i][1].rgbtBlue + temp[i + 1][1].rgbtBlue) / 6);
image[i][0].rgbtGreen = (int) round((temp[i - 1][0].rgbtGreen + temp[i][0].rgbtGreen + temp[i + 1][0].rgbtGreen + temp[i - 1][1].rgbtGreen + temp[i][1].rgbtGreen + temp[i + 1][1].rgbtGreen) / 6);
image[i][0].rgbtRed = (int) round((temp[i - 1][0].rgbtRed + temp[i][0].rgbtRed + temp[i + 1][0].rgbtRed + temp[i - 1][1].rgbtRed + temp[i][1].rgbtRed + temp[i + 1][1].rgbtRed) / 6);
}
//Last column
for (int i = 1; i < height - 1; i ++)
{
image[i][width].rgbtBlue = (int) round((temp[i - 1][width].rgbtBlue + temp[i][width].rgbtBlue + temp[i + 1][width].rgbtBlue + temp[i - 1][width - 1].rgbtBlue + temp[i][width - 1].rgbtBlue + temp[i + 1][width - 1].rgbtBlue) / 6);
image[i][width].rgbtGreen = (int) round((temp[i - 1][width].rgbtGreen + temp[i][width].rgbtGreen + temp[i + 1][width].rgbtGreen + temp[i - 1][width - 1].rgbtGreen + temp[i][width - 1].rgbtGreen + temp[i + 1][width - 1].rgbtGreen) / 6);
image[i][width].rgbtRed = (int) round((temp[i - 1][width].rgbtRed + temp[i][width].rgbtRed + temp[i + 1][width].rgbtRed + temp[i - 1][width - 1].rgbtRed + temp[i][width - 1].rgbtRed + temp[i + 1][width - 1].rgbtRed) / 6);
}
//Rest of cells
for (int i = 1; i < height - 1; i++)
{
for (int j = 1; j < width - 1; j++)
{
image[i][j].rgbtBlue = (int)(round)((temp[i - 1][j - 1].rgbtBlue + temp[i - 1][j].rgbtBlue + temp[i - 1][j + 1].rgbtBlue + temp[i][j - 1].rgbtBlue + temp[i][j].rgbtBlue + temp[i][j + 1].rgbtBlue + temp[i + 1][j - 1].rgbtBlue + temp[i + 1][j].rgbtBlue + temp[i + 1][j + 1].rgbtBlue) / 9);
image[i][j].rgbtGreen = (int)(round)((temp[i - 1][j - 1].rgbtGreen + temp[i - 1][j].rgbtGreen + temp[i - 1][j + 1].rgbtGreen + temp[i][j - 1].rgbtGreen + temp[i][j].rgbtGreen + temp[i][j + 1].rgbtGreen + temp[i + 1][j - 1].rgbtGreen + temp[i + 1][j].rgbtGreen + temp[i + 1][j + 1].rgbtGreen) / 9);
image[i][j].rgbtRed = (int)(round)((temp[i - 1][j - 1].rgbtRed + temp[i - 1][j].rgbtRed + temp[i - 1][j + 1].rgbtRed + temp[i][j - 1].rgbtRed + temp[i][j].rgbtRed + temp[i][j + 1].rgbtRed + temp[i + 1][j - 1].rgbtRed + temp[i + 1][j].rgbtRed + temp[i + 1][j + 1].rgbtRed) / 9);
}
}
return;
}
