practica 8.1

public partial class Form1 : Form
{
int I = 0;
Arreglo H = new Arreglo();
Arreglo F = new Arreglo();
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{

textBox1.Enabled = false;
int Stu;
double Data1, Data2, R;
Stu = int.Parse(textBox1.Text);
textBox2.Focus();
if (I < Stu)
{
label2.Text = ("H" + (I + 2));
Data1 = double.Parse(textBox2.Text);
H.elements[I] = Data1;
label3.Text = ("F" + (I + 2));
Data2 = double.Parse(textBox3.Text);
F.elements[I] = Data2;
I++;
textBox2.Clear();
textBox3.Clear();
textBox1.Focus();
}

if (I == Stu)
{
label2.Text = ("H" + (Stu));
label3.Text = ("F" + (Stu));
textBox2.Clear();
textBox2.Enabled = false;
textBox3.Clear();
textBox3.Enabled = false;
double s = 0.0;
for (I = 0; I < Stu; I++)
{
s = s + H.ObtenerDato(I) * F.ObtenerDato(I);
}
double Numerator = Stu * s - H.SumaDatos(Stu) * F.SumaDatos(Stu);
double Denominator = Math.Sqrt((Stu * H.SumaCuadrada(Stu) - (Math.Pow(H.SumaDatos(Stu), 2))) * (Stu * F.SumaCuadrada(Stu) - (Math.Pow(F.SumaDatos(Stu), 2))));
R = Numerator / Denominator;
textBox4.Text = R.ToString();
}


}
}
}