1-) C# - KararYapilarEgzersiz

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 KararYapilarEgzersiz

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            double s1, s2, proje, ort;

            string durum;

            s1 = Convert.ToDouble(textBox1.Text);

            s2 = Convert.ToDouble(textBox2.Text);

            proje = Convert.ToDouble(textBox3.Text);

            ort = (s1 + s2 + proje) / 3;

            if (ort >= 50)

            {

                durum = "geçti";

            }

            else

            {

                durum = "kaldı";

            }

            textBox4.Text = ort.ToString("0.00") + " / " + durum;

        }

    }

}

Not

Sonuç textbox 4 properties ENABLED FALSE