string-processing-system [CARDENO]

StringProcessingApp/Program.cs

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+/*
+Name: Staley Lane T. Cardeno
+Date: 2/28/2026
+Project Description: A console based string-processing system that allows users to input text and perform various string operations using built-in C# String methods. 
+**/
+
+class Program
+{
+  static void Main(string[] args)
+  {
+    StringView view = new StringView();
+    view.Run();
+  }

StringProcessingApp/Services/StringService.cs

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+public class StringService
+{
+    private string originalText = "";
+    private string currentText = "";
+
+    public void SetText(string text)
+    {
+        originalText = text;
+        currentText = text;
+    }
+
+    public string GetCurrentText()
+    {
+        return currentText;
+    }
+
+    public void ToUpperCase()
+    {
+        currentText = currentText.ToUpper();
+    }
+
+    public void ToLowerCase()
+    {
+        currentText = currentText.ToLower();
+    }
+
+    public int CountCharacters()
+    {
+        return currentText.Length;
+    }
+
+    public bool ContainsWord(string word)
+    {
+        return currentText.Contains(word);
+    }
+
+    public void ReplaceWord(string oldWord, string newWord)
+    {
+        currentText = currentText.Replace(oldWord, newWord);
+    }
+
+    public void ExtractSubstring(int start, int length)
+    {
+        currentText = currentText.Substring(start, length);
+    }
+
+    public void TrimSpaces()
+    {
+        currentText = currentText.Trim();
+    }
+
+    public void ResetText()
+    {
+        currentText = originalText;
+    }
+}

StringProcessingApp/Views/StringView.cs

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+public class StringView
+{
+    private StringService service = new StringService();
+
+    public void Run()
+    {
+        bool running = true;
+
+        while (running)
+        {
+            DisplayMenu();
+            string choice = Console.ReadLine();
+
+            switch (choice)
+            {
+                case "1":
+                    Console.Write("Enter text: ");
+                    string text = Console.ReadLine();
+                    service.SetText(text);
+                    break;
+
+                case "2":
+                    Console.WriteLine("Current Text: " + service.GetCurrentText());
+                    break;
+
+                case "3":
+                    service.ToUpperCase();
+                    break;
+
+                case "4":
+                    service.ToLowerCase();
+                    break;
+
+                case "5":
+                    Console.WriteLine("Character Count: " + service.CountCharacters());
+                    break;
+
+                case "6":
+                    Console.Write("Enter word to check: ");
+                    string word = Console.ReadLine();
+                    Console.WriteLine(service.ContainsWord(word));
+                    break;
+
+                case "7":
+                    Console.Write("Word to replace: ");
+                    string oldWord = Console.ReadLine();
+                    Console.Write("New word: ");
+                    string newWord = Console.ReadLine();
+                    service.ReplaceWord(oldWord, newWord);
+                    break;
+
+                case "8":
+                    Console.Write("Start index: ");
+                    int start = int.Parse(Console.ReadLine());
+                    Console.Write("Length: ");
+                    int length = int.Parse(Console.ReadLine());
+                    service.ExtractSubstring(start, length);
+                    break;
+
+                case "9":
+                    service.TrimSpaces();
+                    break;
+
+                case "10":
+                    service.ResetText();
+                    break;
+
+                case "11":
+                    running = false;
+                    break;
+            }
+        }
+    }
+
+    private void DisplayMenu()
+    {
+        Console.WriteLine("\n--- STRING PROCESSING SYSTEM ---");
+        Console.WriteLine("1. Enter Text");
+        Console.WriteLine("2. View Current Text");
+        Console.WriteLine("3. Convert to UPPERCASE");
+        Console.WriteLine("4. Convert to lowercase");
+        Console.WriteLine("5. Count Characters");
+        Console.WriteLine("6. Check if Contains Word");
+        Console.WriteLine("7. Replace Word");
+        Console.WriteLine("8. Extract Substring");
+        Console.WriteLine("9. Trim Spaces");
+        Console.WriteLine("10. Reset Text");
+        Console.WriteLine("11. Exit");
+        Console.Write("Choose option: ");
+    }
+}