Mandelbrot Set Generator [fixed]
###### Posted by Gizmosis350k
Last Updated: April 09, 2012
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Ch04Ex06
{
class Program
{
static void Main(string[] args)
{
double realCoord, imagCoord;
double realTemp, imagTemp, realTemp2, arg;
int iterations;
for (imagCoord = 1.2; imagCoord >= -1.2; imagCoord -= 0.05)
{
for (realCoord = -0.6; realCoord <= 1.77; realCoord += 0.03)
{
iterations = 0;
realTemp = realCoord;
imagTemp = imagCoord;
arg = (realCoord * realCoord) + (imagCoord * imagCoord);
while ((arg < 4) && (iterations < 40))
{
realTemp2 = (realTemp * realTemp) - (imagTemp * imagTemp)
- realCoord;
imagTemp = (2 * realTemp * imagTemp) - imagCoord;
realTemp = realTemp2;
arg = (realTemp * realTemp) + (imagTemp * imagTemp);
iterations += 1;
}
switch (iterations % 4)
{
case 0:
Console.Write(".");
break;
case 1:
Console.Write("o");
break;
case 2:
Console.Write("O");
break;
case 3:
Console.Write("@");
break;
}
}
Console.Write("\n");
}
}
}
}

I got the source code right after comparing it with the one from the site at wrox.com.

Basically, this demonstrates the for statement in lots fo style. The authors went a little overboard with this one, because things such as Mandelbrot Sets are for persons who are VERY verse in math, and so to be honest i only have a very limited understanding of how this function is capable of achieving such a  complex pattern.
In full colours, this is what it looks like:-

and this is what the program printout looks like:
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