Notebook

Level 6 - Count controlled iterations and scope 0 of 9 activities solved

Countdown to launch Not yet solved
Rainfall Not yet solved
Notebook Not yet solved
Times tables Not yet solved
Voting count Not yet solved
Fizz Buzz Not yet solved
Find and replace Not yet solved
Twelve days of Christmas Not yet solved
Distribution of two dice Not yet solved

Next series Assessment point - Levels 1-6

// Notebook program

using System;

class Submission
{
    // -------------------------
    // Subprograms
    // -------------------------
    // Return valid note index (0-9)
    static int get_note_number()
    {
        int note_number = 0;
        bool valid_input = false;
        while (!valid_input)
        {
            note_number = Convert.ToInt32(Console.ReadLine());
            if (note_number >= 0 && note_number < 10)
            {
                valid_input = true;
            }
            else
            {
                Console.WriteLine("Invalid input. Enter 0-9.");
            }
        }
        return note_number;
    }


    // Write a new note
    static void add_note(string[] notebook)
    {
        int index = get_note_number();
        string note = Console.ReadLine();
        notebook[index] = note;
    }


    // Clear the whole notebook (after confirmation)
    static void clear_notes(string[] notebook)
    {
        string choice = "";
        while (choice != "y" && choice != "n")
        {
            choice = Console.ReadLine();
        }
        if (choice == "y")
        {
            for (int index = 0; index < notebook.Length; index++)
            {
                notebook[index] = "";
            }
        }
    }


    // Sort notes alphabetically
    static void order_notes(string[] notebook)
    {
        Array.Sort(notebook);
    }


    // Show the notebook
    static void show_notebook(string[] notebook)
    {
        for (int index = 0; index < notebook.Length; index++)
        {
            Console.WriteLine($"{index} : {notebook[index]}");
        }
    }


    // Menu (returns false when the user quits)
    static bool menu(string[] notebook)
    {
        Console.WriteLine();
        Console.WriteLine("a. Add note");
        Console.WriteLine("c. Clear notebook");
        Console.WriteLine("o. Order notes");
        Console.WriteLine("q. Quit");
        string choice = Console.ReadLine();
        if (choice == "q")
        {
            return false;
        }
        switch (choice)
        {
            case "a":
                add_note(notebook);
                break;
            case "c":
                clear_notes(notebook);
                break;
            case "o":
                order_notes(notebook);
                break;
        }
        return true;
    }


    // -------------------------
    // Main program
    // -------------------------
    public static void Main(string[] args)
    {
        string[] notebook = new string[10];
        for (int i = 0; i < notebook.Length; i++)
        {
            notebook[i] = "";
        }
        bool running = true;
        while (running)
        {
            show_notebook(notebook);
            running = menu(notebook);
        }
    }

}