public static void Main(string[] args)
{
Console.Write ("a:");
double a = Convert.ToDouble (Console.ReadLine ());
Console.Write ("b:");
double b = Convert.ToDouble (Console.ReadLine ());
double eps = 1e-6;
double m = 0;
int i = 0;
if (f(a) * f(m) > 0)
{
Console.Write ("No Root");
} else
{
do {
m = (a + b) / 2;
Console.WriteLine ("{0},{1},{2},{3},{4},{5}", i + 1, a, b, m, f (a) * f (b) > 0 ? "+" : "-", Math.Abs ((b - a) / 2));
if (f (a) * f (m) == 0) {
}
if (f (a) * f (m) < 0) {
b = m;
} else {
a = m;
}
i++;
} while (Math.Abs ((b - a) / 2) > eps);
}
Console.ReadLine ();
}
