Fibonacci Numbers

Hello,

Today i'd to write a code which should display the fibonacci numbers.

As i remember, the code that i've written is wrong:(.

So, now i rewrite the code in a few minutes. As a computer engineering student, this is so easy to solve but if u're not worried :s.

Anyway,

kodumuz şu şekilde(here is the code):

/*info*/

//textBox1 holds the number which calculates the fibonacci series "up to".          

//textBox2 shows the result according to the value of textBox1.Text.

//the array "sayi" holds the numbers in the fibonacci serie.

private void button1_Click(object sender, EventArgs e)
        {

            int N = Convert.ToInt32(textBox1.Text);
            int[] sayi = new int[N + 1];
            sayi[0] = 1;
            if (N > 0)
            {              
                sayi[1] = 1;

                if (N == 1)
                    textBox2.Text = sayi[N].ToString();
                else
                {
                    for (int i = 2; i <= N; i++)
                       sayi[i] = sayi[i - 1] + sayi[i - 2];
                                
                    textBox2.Text = sayi[N].ToString();
                }

            }
            else if(N == 0)
                textBox2.Text = sayi[N].ToString();

            else
                MessageBox.Show("istenilen aralikta değil", "Hata");


        }

 

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