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 p_29_calcul_medie
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void buttonExit_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        bool Validare()
        {
            string s = TextBoxNote.Text.Trim();
            if (s == String.Empty) return false;
            //verific notele din oral daca sunt valide
            for (int i = 0; i < s.Length; i++)
                if (!(('0' <= s[i] && s[i] <= '9') || (s[i] == ' ')))
                    return false;
            string[] note = s.Split(new char[] { ' ' },
                StringSplitOptions.RemoveEmptyEntries);
            foreach (string w in note)
            {
                if (w.Length > 2) return false;
                int x = int.Parse(w);
                if (x < 1 || x > 10) return false;
            }
            if (note.Length < 2) return false;
            //verific nota la teza
            s = TextBoxTeza.Text.Trim();
            if (s == String.Empty) return true; // nu e nota in teza

            if (s.Length > 2) return false;

            for (int i = 0; i < s.Length; i++)
                if (s[i] < '0' || s[i] > '9') return false;
            int y = int.Parse(s);
            if (y < 1 || y > 10) return false;
            return true;
        }

        private void buttonCalcul_Click(object sender, EventArgs e)
        {
            if (!Validare())
            {
                MessageBox.Show("Date introduse eronat!");
                return;
            }

            //calculez suma notelor in oral si numarul de note
            double s = 0;
            int n = 0;
            string[] note = TextBoxNote.Text.Split(new char[] { ' ' },
                StringSplitOptions.RemoveEmptyEntries);
            n = note.Length;
            foreach (string w in note)
            {
                s += int.Parse(w);
            }
            s = s / n;
            string t = TextBoxTeza.Text.Trim();
            if (t == String.Empty)
            {
                //nu este nota la teza
                int x = (int)(s * 100);
                s = x / 100.0;
                TextBoxMedia.Text = s.ToString();
            }
            else // este si teza
            {

            }
        }
    }
}