Generate a console Mandelbrot in C#

gistfile1.txt

int width = 80; // Default width
if (args != null && args.Length > 0)
{
    if (int.TryParse(args[0], out int parsedWidth) && parsedWidth > 0)
    {
        width = parsedWidth;
    }
}
int height = width / 2;
double xMin = -2.0;
double xMax = 1.0;
double yMin = -1.0;
double yMax = 1.0;
int maxIterations = 100;

for (int row = 0; row < height; row++)
{
    for (int col = 0; col < width; col++)
    {
        double x0 = xMin + (xMax - xMin) * col / width;
        double y0 = yMin + (yMax - yMin) * row / height;
        
        double x = 0;
        double y = 0;
        int iteration = 0;
        
        while (x*x + y*y < 4 && iteration < maxIterations)
        {
            double xTemp = x*x - y*y + x0;
            y = 2*x*y + y0;
            x = xTemp;
            iteration++;
        }
        
        // Choose a character based on how quickly the point escaped
        char displayChar = ' ';
        if (iteration == maxIterations)
            displayChar = '#'; // Point is in the set
        else if (iteration > maxIterations * 0.75)
            displayChar = '@';
        else if (iteration > maxIterations * 0.5)
            displayChar = '*';
        else if (iteration > maxIterations * 0.25)
            displayChar = '+';
        else if (iteration > maxIterations * 0.1)
            displayChar = '.';
        
        Console.Write(displayChar);
    }
    Console.WriteLine();
}