Tic tac toe SDLC

Then I began with the design phase of the system. System design is a solution, a “HOW TO” approach to the creation of a new system. It translates system requirements into ways by which they can be made operational. It is a translational from a user oriented document to a document oriented programmers. For that, it provides the understanding and procedural details necessary for the implementation. Here I use Flowchart to supplement the working of the new system. The system thus made should be reliable, durable and above all should have least possible maintenance costs. It should overcome all the drawbacks of the Old existing system and most important of all meet the user requirements 

public partial class Trips_traps_trull : ContentPage { public bool esimene; int tulemus = 2; int[,] Tulemused = new int[3, 3] { { 5, 5, 5 }, { 5, 5, 5 }, { 5, 5, 5 } }; Grid g, g2; Button uus_mang, button; Image img; bool x = false; List<Image> newList=new List<Image>(); public Trips_traps_trull() { g = new Grid { VerticalOptions = LayoutOptions.FillAndExpand, BackgroundColor = Color.White, RowDefinitions = { new RowDefinition { Height = new GridLength(2, GridUnitType.Star) }, new RowDefinition { Height = new GridLength(1, GridUnitType.Star) } }, ColumnDefinitions = { new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) } }, }; Uus_mang(); uus_mang = new Button() { Text = “Uus mäng” }; button = new Button() { Text = “Muutke taustavärvi” }; g.Children.Add(uus_mang, 0, 1); g.Children.Add(button, 0, 2); uus_mang.Clicked += Uus_mang_Clicked; button.Clicked += Button_Clicked; Content = g; } private void Button_Clicked(object sender, EventArgs e) { int i=0; Random r = new Random(); g.BackgroundColor = Color.FromRgb(r.Next(0, 256), r.Next(0, 256), r.Next(0, 225)); g2.BackgroundColor = Color.FromRgb(r.Next(0, 256), r.Next(0, 256), r.Next(0, 225)); i++; try { Vibration.Vibrate(); var duration = TimeSpan.FromSeconds(0.1); Vibration.Vibrate(duration); } catch (FeatureNotSupportedException ex) { } catch (Exception ex) { } } public async void Kes_on_esimene() { string esimene_valik = await DisplayPromptAsync(“Kes on esimene?”, “Tee valiku Krestik-1 või Nolik-2”, initialValue: “1”, maxLength: 1, keyboard: Keyboard.Numeric); if (esimene_valik == “1”) { esimene = true; } else { esimene = false; } } private void Uus_mang_Clicked(object sender, EventArgs e) { Uus_mang(); } public async void Uus_mang() { bool uus = await DisplayAlert(“Uus mäng”, “Kas tõesti tahad uus mäng?”, “Tahan küll!”, “Ei taha!”); if (uus) { Kes_on_esimene(); int[,] Tulemused = new int[3, 3]; tulemus = 2;

▪︎Press the play button to start the game

▪︎Click on the fields so that crosses and zeros appear

•Make updates by pressing the new game button