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 WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        char a, b, t;
        string username = "gogo" , password = "qwer";
        int ctr = 0, dd = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox2_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox3_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox4_TextChanged(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {

            b = Convert.ToChar(textBox1.Text);
            a = Convert.ToChar(textBox2.Text);
            t = Convert.ToChar(textBox3.Text);

            textBox4.Text = b + " " + a + " " + t;
        }

        private void label3_Click(object sender, EventArgs e)
        {

        }
        int sk = 0;
        private void button2_Click(object sender, EventArgs e)
        {
            username = Convert.ToString(textBox5.Text);
            password = Convert.ToString(textBox6.Text);

            // MessageBox.Show(username + " " +  password);
            if (sk < 3)
            {
                if (username == "gogo" && password == "qwer")
                {
                    MessageBox.Show("teisingai");
                    sk = 0;
                }
                else
                {
                    MessageBox.Show("Neteisingai");
                    sk++;
                }

            }
            else
            {
        MessageBox.Show("Jus esate uzblokuotas");
    }
        }


        private void textBox5_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox6_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox7_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox8_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox9_TextChanged(object sender, EventArgs e)
        {

        }

        private void button3_Click(object sender, EventArgs e)
        {
            double a, c;
            char b;
            a = Convert.ToDouble(textBox7.Text);
            b = Convert.ToChar(textBox8.Text);
            c = Convert.ToDouble(textBox9.Text);

            if(b == '+'){
                textBox10.Text = Convert.ToString(a + c);
            }
            else if(b == '-'){
                textBox10.Text = Convert.ToString(a - c);
            }
            else if(b == '*'){
                textBox10.Text = Convert.ToString(a * c);
            }
            else if(b == '/'){
                textBox10.Text = Convert.ToString(a / c);
            }


        }

        private void textBox10_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox11_TextChanged(object sender, EventArgs e)
        {

        }

        private void button4_Click(object sender, EventArgs e)
        {
            double a, b = 3.14;
            a = Convert.ToDouble(textBox11.Text);
            textBox12.Text = Convert.ToString(2 * b * a);
        }

        private void textBox12_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox13_TextChanged(object sender, EventArgs e)
        {

        }

        private void button5_Click(object sender, EventArgs e)
        {
            char a;
            a = Convert.ToChar(textBox13.Text);
            if (char.IsLower(a))
            {
                MessageBox.Show("mazoji");
            }
            else
            {
                MessageBox.Show("didzioji");
            }
        }

        private void textBox14_TextChanged(object sender, EventArgs e)
        {

        }
    }
}