Homework 4

KDU-DOTNET.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.002.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "homework-1", "homework-1\homework-1.csproj", "{D8745BCC-B6E9-46B7-91C5-26BEFF3BDBDE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D8745BCC-B6E9-46B7-91C5-26BEFF3BDBDE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D8745BCC-B6E9-46B7-91C5-26BEFF3BDBDE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D8745BCC-B6E9-46B7-91C5-26BEFF3BDBDE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D8745BCC-B6E9-46B7-91C5-26BEFF3BDBDE}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3F2F8AEF-7CF3-4C45-B95B-2278498B5792}
+	EndGlobalSection
+EndGlobal

homework-1/Program.cs

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+using System;
+
+public class BankAccount
+{
+    private int balance;
+
+    public BankAccount()
+    {
+        balance = 0;
+    }
+
+    public void Deposit(int amount)
+    {
+        balance += amount;
+        Console.WriteLine($"Deposited Rs{amount}. New balance: Rs{balance}");
+    }
+
+    public void Withdraw(int amount)
+    {
+
+        if (balance >= amount)
+        {
+            balance -= amount;
+            Console.WriteLine($"Withdrawn Rs{amount}. New balance: Rs{balance}");
+        }
+        else
+        {
+            Console.WriteLine("Error: Insufficient balance.");
+        }
+    }
+    public int GetBalance()
+    {
+        return balance;
+    }
+}
+
+public class Program
+{
+    public static void Main(string[] args)
+    {
+        BankAccount account = new BankAccount();
+        account.Deposit(1000); 
+        account.Withdraw(500); 
+        account.Withdraw(800); 
+    }
+}

homework-1/homework-1.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <RootNamespace>homework_1</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

homework-2/Program.cs

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+using System;
+
+class Person
+{
+    private string name;
+    private int age;
+
+    // Parameterized constructor that accepts values for name and age
+    public Person(string name, int age)
+    {
+        this.name = name;
+        this.age = age;
+    }
+
+    // Default constructor that sets name to unknown and age to 0
+    public Person()
+    {
+        name = "Unknown";
+        age = 0;
+    }
+
+    // Destructor which also displays message
+    ~Person()
+    {
+        Console.WriteLine("The object is being destroyed.");
+    }
+
+    public void DisplayInfo()
+    {
+        Console.WriteLine($"Name: {name}, Age: {age}");
+    }
+}
+
+class Program
+{
+    static void Main()
+    {
+        Person person1 = new Person("Prashant", 22);
+        person1.DisplayInfo();
+
+        Person person2 = new Person();
+        person2.DisplayInfo(); 
+    }
+}

homework-2/homework-2.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <RootNamespace>homework_2</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

homework-3/Program.cs

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+using System;
+using System.IO;
+
+public class Logger : IDisposable
+{
+    private static Logger? instance; 
+    private readonly string logFilePath;
+    private StreamWriter? logWriter;
+
+    private Logger(string logFilePath)
+    {
+        this.logFilePath = logFilePath;
+        logWriter = new StreamWriter(logFilePath, true);
+    }
+
+    public static Logger Instance
+    {
+        get
+        {
+            instance ??= new Logger("log.txt");
+            return instance;
+        }
+    }
+
+    private void Log(string message)
+    {
+        logWriter?.WriteLine($"{DateTime.Now}: {message}");
+        logWriter?.Flush();
+    }
+
+    public void Dispose()
+    {
+        logWriter?.Dispose();
+    }
+
+    public static void Main(string[] args)
+    {
+        using var logger = Logger.Instance;
+        logger.Log("Logging a message to the log file.");
+    }
+}

homework-3/homework-3.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <RootNamespace>homework_3</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

homework-3/log.txt

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+5/12/2024 12:27:14 AM: Logging a message to the log file.

homework-4/Program.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace ConsoleApp
+{
+    public class Program
+    {
+        static List<int> list = new List<int>();
+        static Dictionary<int, string> dictionary = new Dictionary<int, string>();
+
+        static void Main(string[] args)
+        {
+            Menu();
+        }
+
+        static void Menu()
+        {
+            Console.WriteLine("Please enter a number from the given menu:");
+            Console.WriteLine("1. Add an element to the List.");
+            Console.WriteLine("2. Print all the elements present in the List.");
+            Console.WriteLine("3. Delete the last element from the List.");
+            Console.WriteLine("4. Delete the first element from the List.");
+            Console.WriteLine("5. Delete the middle element from the List.");
+            Console.WriteLine("6. Calculate the average of the elements present in the List.");
+            Console.WriteLine("7. Exit the application.");
+
+            string choice = Console.ReadLine();
+
+            switch (choice)
+            {
+                case "1":
+                    Console.Write("Enter a number to add to the List: ");
+                    int numToAdd = Convert.ToInt32(Console.ReadLine());
+                    list.Add(numToAdd);
+                    Menu();
+                    break;
+                case "2":
+                    Console.WriteLine("Elements in the List:");
+                    foreach (var num in list)
+                    {
+                        Console.Write(num + " ");
+                    }
+                    Console.WriteLine();
+                    Menu();
+                    break;
+                case "3":
+                    if (list.Count > 0)
+                    {
+                        list.RemoveAt(list.Count - 1);
+                        Console.WriteLine("Last element deleted from the List.");
+                    }
+                    else
+                    {
+                        Console.WriteLine("List is empty.");
+                    }
+                    Menu();
+                    break;
+                case "4":
+                    if (list.Count > 0)
+                    {
+                        list.RemoveAt(0);
+                        Console.WriteLine("First element deleted from the List.");
+                    }
+                    else
+                    {
+                        Console.WriteLine("List is empty.");
+                    }
+                    Menu();
+                    break;
+                case "5":
+                    if (list.Count > 0)
+                    {
+                        int middleIndex = list.Count / 2;
+                        list.RemoveAt(middleIndex);
+                        Console.WriteLine("Middle element deleted from the List.");
+                    }
+                    else
+                    {
+                        Console.WriteLine("List is empty.");
+                    }
+                    Menu();
+                    break;
+                case "6":
+                    if (list.Count > 0)
+                    {
+                        double average = list.Average();
+                        Console.WriteLine("Average of elements in the List: " + average);
+                    }
+                    else
+                    {
+                        Console.WriteLine("List is empty.");
+                    }
+                    Menu();
+                    break;
+                case "7":
+                    Environment.Exit(0);
+                    break;
+                default:
+                    Console.WriteLine("Please enter a valid number.");
+                    Menu();
+                    break;
+            }
+        }
+    }
+}

homework-4/homework-4.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <RootNamespace>homework_4</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>