[OOP] LV6 - Zadaci + Analiza

// Zadaci
// 1. zadatak
namespace LV6
{
    public partial class form_trokut : Form
    {
        double a, b, c;
        public form_trokut()
        {
            InitializeComponent();
        }

        double povrsina() {
            double s = (a + b + c) / 2;
            return System.Math.Round(System.Math.Sqrt(s*(s - a)*(s - b)*(s - c)), 2);
        }

        double opseg() {
            return System.Math.Round((a + b + c), 2);
        }

        bool pravokutan()
        {
            if (c == System.Math.Sqrt(a * a + b * b))
            {
                return true;
            }
            return false;
        }

        private void button_izracunaj_Click(object sender, EventArgs e)
        {
            if (!double.TryParse(textBox_a.Text, out a)) {
                MessageBox.Show("Pogrešan unos stranice a!", "Pogreška!");
            }
            else if(!double.TryParse(textBox_b.Text, out b)) {
                MessageBox.Show("Pogrešan unos stranice b!", "Pogreška!");
            }
            else if(!double.TryParse(textBox_c.Text, out c)) {
                MessageBox.Show("Pogrešan unos stranice c!", "Pogreška!");
            }
            else if (c >= a + b || b >= a + c || a >= b + c) {
                MessageBox.Show("Trokut nije moguć!", "Pogreška!");
            }
            else
            {
                label_povrsina.Text = ("Površina: " + povrsina()).ToString();
                label_opseg.Text = ("Opseg: " + opseg()).ToString();
            }
        }

        private void button_pravokutan_Click(object sender, EventArgs e)
        {
            if (!double.TryParse(textBox_a.Text, out a))
            {
                MessageBox.Show("Pogrešan unos stranice a!", "Pogreška!");
            }
            else if (!double.TryParse(textBox_b.Text, out b))
            {
                MessageBox.Show("Pogrešan unos stranice b!", "Pogreška!");
            }
            else if (!double.TryParse(textBox_c.Text, out c))
            {
                MessageBox.Show("Pogrešan unos stranice c!", "Pogreška!");
            }
            else if (c >= a + b || b >= a + c || a >= b + c)
            {
                MessageBox.Show("Trokut nije moguć!", "Pogreška!");
            }
            else
            {
                if (pravokutan())
                {
                    label_pravokutan.ForeColor = System.Drawing.Color.Green;
                    label_pravokutan.Text = "Pravokutan: DA";
                }
                else
                {
                    label_pravokutan.ForeColor = System.Drawing.Color.Red;
                    label_pravokutan.Text = "Pravokutan: NE";
                }
            }
        }

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

// 2. zadatak
namespace LV6___Zadatak_2
{
    public partial class form_imenik : Form
    {
        public form_imenik()
        {
            InitializeComponent();
        }

        class Kontakt
        {
            #region data_members
            private string ime;
            public string prezime;
            private string broj_telefona;
            #endregion

            #region public_methods
            public Kontakt()
            {
                ime = ""; prezime = ""; broj_telefona = "";
            }
            public Kontakt(string i, string p, string b)
            {
                ime = i; prezime = p; broj_telefona = b;
            }
            public override string ToString()
            {
                return ime + "\t" + prezime + "\t" + broj_telefona;
            }
            #endregion
        }

        List<Kontakt> listKontakt = new List<Kontakt>();
        string path = "C:\\Users\\Student\\Documents\\Visual Studio 2015\\Projects\\LV6 - Zadatak 2\\LV6 - Zadatak 2\\imenik.txt";

        private void form_imenik_Load(object sender, EventArgs e)
        {
            using (System.IO.StreamReader reader = new System.IO.StreamReader(@path))
            {
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    string[] parts = line.Split('\t');
                    Kontakt K = new Kontakt(parts[0], parts[1], parts[2]);
                    listKontakt.Add(K);
                }
                listBox_popis.DataSource = null;
                listBox_popis.DataSource = listKontakt;
            }

        }

        private void button_dodaj_Click(object sender, EventArgs e)
        {
            bool error = false;

            if (textBox_ime.Text == "" || textBox_prezime.Text == "" || textBox_broj.Text == "")
            {
                error = true;
                MessageBox.Show("Neko od polja ostalo je prazno.", "Pogreška!");
            }
            else if (!Regex.IsMatch(textBox_broj.Text, @"^[0-9]+$"))
            {
                error = true;
                MessageBox.Show("Broj telefona je neispravan!", "Pogreška!");
            }
            else
            {
                error = false;
            }

            if (!error)
            {
                Kontakt K = new Kontakt(textBox_ime.Text, textBox_prezime.Text, textBox_broj.Text);
                listKontakt.Add(K);
                listBox_popis.DataSource = null;
                listBox_popis.DataSource = listKontakt;
                textBox_ime.Text = String.Empty;
                textBox_prezime.Text = String.Empty;
                textBox_broj.Text = String.Empty;
            }
        }

        private void button_izlaz_Click(object sender, EventArgs e)
        {
            using (System.IO.StreamWriter write = new System.IO.StreamWriter(@path))
            {
                foreach (Kontakt K in listKontakt)
                {
                    {
                        write.WriteLine(K.ToString());
                    }
                }
            }
            Application.Exit();
        }

        private void button_pretraga_Click(object sender, EventArgs e)
        {
            bool state = false;

            if (textBox_pretraga.Text == "")
            {
                MessageBox.Show("Niste unjeli prezime!", "Pogreška!");
            }
            else
            {
                foreach (Kontakt K in listKontakt)
                {
                    if (K.prezime.Contains(textBox_pretraga.Text))
                    {
                        state = true;
                        break;
                    }
                    else
                    {
                        state = false;
                    }
                }

                if (state)
                {
                    MessageBox.Show("Kontakt postoji!", "Pretraga!");
                }
                else
                {
                    MessageBox.Show("Kontakt ne postoji!", "Pretraga!");
                }
            }
        }
    }
}

// Analiza
// 1. Napravite aplikaciju znanstveni kalkulator koja će imati funkcionalnost
// znanstvenog kalkulatora, odnosno implementirati osnovne (+,-,*,/) i barem 5
// naprednih (sin, cos, log, sqrt...) operacija.

namespace LV6___Analiza_1
{
    public partial class form_kalkulator : Form
    {
        double FirstNumber;
        string Operation;

        public form_kalkulator()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox_display.Text == "0" && textBox_display.Text != null)
            {
                textBox_display.Text = "1";
            }
            else
            {
                textBox_display.Text = textBox_display.Text + "1";
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (textBox_display.Text == "0" && textBox_display.Text != null)
            {
                textBox_display.Text = "2";
            }
            else
            {
                textBox_display.Text = textBox_display.Text + "2";
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (textBox_display.Text == "0" && textBox_display.Text != null)
            {
                textBox_display.Text = "3";
            }
            else
            {
                textBox_display.Text = textBox_display.Text + "3";
            }
        }

        private void button4_Click(object sender, EventArgs e)
        {
            if (textBox_display.Text == "0" && textBox_display.Text != null)
            {
                textBox_display.Text = "4";
            }
            else
            {
                textBox_display.Text = textBox_display.Text + "4";
            }
        }

        private void button5_Click(object sender, EventArgs e)
        {
            if (textBox_display.Text == "0" && textBox_display.Text != null)
            {
                textBox_display.Text = "5";
            }
            else
            {
                textBox_display.Text = textBox_display.Text + "5";
            }
        }

        private void button6_Click(object sender, EventArgs e)
        {
            if (textBox_display.Text == "0" && textBox_display.Text != null)
            {
                textBox_display.Text = "6";
            }
            else
            {
                textBox_display.Text = textBox_display.Text + "6";
            }
        }

        private void button7_Click(object sender, EventArgs e)
        {
            if (textBox_display.Text == "0" && textBox_display.Text != null)
            {
                textBox_display.Text = "7";
            }
            else
            {
                textBox_display.Text = textBox_display.Text + "7";
            }
        }

        private void button8_Click(object sender, EventArgs e)
        {
            if (textBox_display.Text == "0" && textBox_display.Text != null)
            {
                textBox_display.Text = "8";
            }
            else
            {
                textBox_display.Text = textBox_display.Text + "8";
            }
        }

        private void button9_Click(object sender, EventArgs e)
        {
            if (textBox_display.Text == "" && textBox_display.Text != null)
            {
                textBox_display.Text = "9";
            }
            else
            {
                textBox_display.Text = textBox_display.Text + "9";
            }
        }

        private void button0_Click(object sender, EventArgs e)
        {
            textBox_display.Text = textBox_display.Text + "0";
        }

        private void button_dot_Click(object sender, EventArgs e)
        {
            textBox_display.Text = textBox_display.Text + ".";
        }

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

        private void button_ce_Click(object sender, EventArgs e)
        {
            textBox_display.Text = "0";
        }

        private void button_add_Click(object sender, EventArgs e)
        {
            FirstNumber = Convert.ToDouble(textBox_display.Text);
            textBox_display.Text = "0";
            Operation = "+";
        }

        private void button_sub_Click(object sender, EventArgs e)
        {
            FirstNumber = Convert.ToDouble(textBox_display.Text);
            textBox_display.Text = "0";
            Operation = "-";
        }

        private void button_mul_Click(object sender, EventArgs e)
        {
            FirstNumber = Convert.ToDouble(textBox_display.Text);
            textBox_display.Text = "0";
            Operation = "*";
        }

        private void button_div_Click(object sender, EventArgs e)
        {
            FirstNumber = Convert.ToDouble(textBox_display.Text);
            textBox_display.Text = "0";
            Operation = "/";
        }

        private void button_equal_Click(object sender, EventArgs e)
        {
            double SecondNumber;
            double Result;

            SecondNumber = Convert.ToDouble(textBox_display.Text);

            if (Operation == "+")
            {
                Result = (FirstNumber + SecondNumber);
                textBox_display.Text = Convert.ToString(Result);
                FirstNumber = Result;
            }
            if (Operation == "-")
            {
                Result = (FirstNumber - SecondNumber);
                textBox_display.Text = Convert.ToString(Result);
                FirstNumber = Result;
            }
            if (Operation == "*")
            {
                Result = (FirstNumber * SecondNumber);
                textBox_display.Text = Convert.ToString(Result);
                FirstNumber = Result;
            }
            if (Operation == "/")
            {
                if (SecondNumber == 0)
                {
                    textBox_display.Text = "Cannot divide by zero";

                }
                else
                {
                    Result = (FirstNumber / SecondNumber);
                    textBox_display.Text = Convert.ToString(Result);
                    FirstNumber = Result;
                }
            }
        }

        private void button_sqrt_Click(object sender, EventArgs e)
        {
            FirstNumber = Convert.ToDouble(textBox_display.Text);
            double Result = 0;
            Result = Math.Sqrt(FirstNumber);
            textBox_display.Text = Result.ToString();
        }

        private void button_log_Click(object sender, EventArgs e)
        {
            FirstNumber = Convert.ToDouble(textBox_display.Text);
            double Result;
            Result = Math.Log(FirstNumber);
            textBox_display.Text = Result.ToString();
        }

        private void button_sin_Click(object sender, EventArgs e)
        {
            FirstNumber = Convert.ToDouble(textBox_display.Text);
            double Result = 0;
            Result = Math.Sin(FirstNumber);
            textBox_display.Text = Result.ToString();
        }

        private void button_cos_Click(object sender, EventArgs e)
        {
            FirstNumber = Convert.ToDouble(textBox_display.Text);
            double Result = 0;
            Result = Math.Cos(FirstNumber);
            textBox_display.Text = Result.ToString();
        }

        private void button_tan_Click(object sender, EventArgs e)
        {
            FirstNumber = Convert.ToDouble(textBox_display.Text);
            double Result = 0;
            Result = Math.Tan(FirstNumber);
            textBox_display.Text = Result.ToString();
        }
    }
}

// 2. Napravite jednostavnu igru vješala. Pojmovi se učitavaju u listu iz datoteke, i u
// svakoj partiji se odabire nasumični pojam iz liste. Omogućiti svu
// funkcionalnost koju biste očekivali od takve igre. Nije nužno crtati vješala,
// dovoljno je na labeli ispisati koliko je pokušaja za odabir slova preostalo.

namespace LV6___Analiza_2
{
    public partial class form_vjesalo : Form
    {
        public form_vjesalo()
        {
            InitializeComponent();
        }

        int hit = 0;
        int pokusaji = 8;
        string pojam;
        static Random rnd = new Random();

        List<Label> labels = new List<Label>();
        List<string> pojmovi = new List<string>();
        string path = "C:\\Users\\Đordan\\Documents\\Visual Studio 2013\\Projects\\LV6 - Analiza 2\\LV6 - Analiza 2\\pojmovi.txt";

        private void Form1_Load(object sender, EventArgs e)
        {
            using (System.IO.StreamReader reader = new System.IO.StreamReader(@path))
            {
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    pojmovi.Add(line);
                }
            }

            int r = rnd.Next(pojmovi.Count);
            pojam = (string)pojmovi[r];

            labels = new List<Label>();
            int startX = 80;
            foreach (char c in pojam)
            {
                Label lbl = new Label();
                lbl.Text = "_";
                lbl.Font = new Font(lbl.Font.Name, 20, lbl.Font.Style);
                lbl.Location = new Point(startX, 90);
                lbl.Tag = c.ToString();
                lbl.AutoSize = true;
                this.Controls.Add(lbl);
                labels.Add(lbl);
                startX = lbl.Right;
            }
        }

        private void button_pokusaj_Click(object sender, EventArgs e)
        {
            if (textBox_pokusaj.Text.Length == 0 || textBox_pokusaj.Text.Length > 1)
            {
                textBox_pokusaj.Text = "";
                MessageBox.Show("Pogrešan unos!", "Greška!");
            }
            else
            {
                if (pojam.Contains(textBox_pokusaj.Text))
                {
                    for (int i = 0; i < pojam.Length; i++)
                    {
                        if (pojam.IndexOf(textBox_pokusaj.Text) == pojam.IndexOf(pojam[i]))
                        {
                            if (labels[i].Text == "_")
                            {
                                labels[i].Text = textBox_pokusaj.Text;
                                hit++;
                            }
                            else
                            {
                                MessageBox.Show("Slovo je već unešeno!", "Greška!");
                                break;
                            }
                        }
                    }
                    textBox_pokusaj.Text = "";
                    if (hit == pojam.Length)
                    {
                        MessageBox.Show("Pobjedio si!", "Pobjeda!");
                        Application.Exit();
                    }
                }
                else
                {
                    if (pokusaji == 1)
                    {
                        textBox_pokusaj.Text = "";
                        pokusaji--;
                        label_pokusaji.Text = "Broj preostalih pokusaja: " + pokusaji;
                        MessageBox.Show("Izgubio si!", "Poraz!");
                        Application.Exit();
                    }
                    else
                    {
                        textBox_pokusaj.Text = "";
                        pokusaji--;
                        label_pokusaji.Text = "Broj preostalih pokusaja: " + pokusaji;
                    }
                }
            }
        }
    }
}