private int f(int i)
{
if (i == 1)
{
return 1;
}
else
{
return f(i - 1) + g(i);
}
}
private int g(int i)
{
if (i == 1)
{
return 1;
}
else
{
return g(i - 1) * i;
}
}
private void button1_Click(object sender, EventArgs e)
{
int n = Convert.ToInt32(textBox1.Text);
textBox2.Text = f(n).ToString();
}
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