using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        
        public Form1()
        {
            InitializeComponent();
        }
        string[] isimler = new string[8];
        int[] notlar = new int[8];
        int index = 0;

        private void button1_Click(object sender, EventArgs e)
        {
            if (index < isimler.Length)
            {
                isimler[index] = textBox1.Text;
                notlar[index] = Convert.ToInt32(textBox2.Text);

                index++;
                textBox1.Text = "";
                textBox2.Text = "";

            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < isimler.Length; i++)
            {
                if(isimler[i] !=null)
                {
                    listBox1.Items.Add(isimler[i] + " : " + notlar[i]);

                }
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            int enyuksek = notlar[0];
            for(int i=0; i< notlar.Length;i++ )
            {
                if( notlar[i] >enyuksek)
                {
                    enyuksek = notlar[i];
                }

            }
            txtenyuksek.Text = enyuksek.ToString();

        }

        private void button4_Click(object sender, EventArgs e)
        {
            int endusuk = notlar[0];
            for(int i=0; i<notlar.Length; i++)
            {
                if (notlar[i] < endusuk)
                    endusuk = notlar[i];

            }
            txtendusuk.Text = endusuk.ToString();

        }

        private void button5_Click(object sender, EventArgs e)
        {
            int toplam = 0;
            double ortalama = 0;
            for (int i =0; i<notlar.Length;i++)
            {
                toplam += notlar[i];
            }
            ortalama = toplam / notlar.Length;
            txtortlm.Text = ortalama.ToString();

        }
    }
}