├── Authentication.md
├── Markdown.md
├── README.md
├── Shell.md
├── Shortener.md
└── sad.md


/Authentication.md:
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 1 | using System;
 2 | using System.Collections.Generic;
 3 | 
 4 | class Program {
 5 |     static Dictionary<string, string> users = new Dictionary<string, string>();
 6 | 
 7 |     static void Main() {
 8 |         while (true) {
 9 |             Console.WriteLine("1. Register\n2. Login\n3. Exit");
10 |             string choice = Console.ReadLine();
11 | 
12 |             if (choice == "1") {
13 |                 RegisterUser();
14 |             } else if (choice == "2") {
15 |                 LoginUser();
16 |             } else if (choice == "3") {
17 |                 break;
18 |             } else {
19 |                 Console.WriteLine("Invalid option.");
20 |             }
21 |         }
22 |     }
23 | 
24 |     static void RegisterUser() {
25 |         Console.Write("Enter username: ");
26 |         string username = Console.ReadLine();
27 |         Console.Write("Enter password: ");
28 |         string password = Console.ReadLine();
29 |         users[username] = password;
30 |         Console.WriteLine("User registered!");
31 |     }
32 | 
33 |     static void LoginUser() {
34 |         Console.Write("Enter username: ");
35 |         string username = Console.ReadLine();
36 |         Console.Write("Enter password: ");
37 |         string password = Console.ReadLine();
38 | 
39 |         if (users.ContainsKey(username) && users[username] == password) {
40 |             Console.WriteLine("Login successful!");
41 |         } else {
42 |             Console.WriteLine("Invalid credentials.");
43 |         }
44 |     }
45 | }
46 | 


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/Markdown.md:
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1 | | Language      | Greeting       |
2 | |---------------|----------------|
3 | | Python        | Hello, World!  |
4 | | JavaScript    | Hello, World!  |
5 | | HTML          | Hello, World!  |
6 | 


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/README.md:
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1 | # ShellScript


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/Shell.md:
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1 | #!/bin/bash
2 | greet() {
3 |     echo "Hello, $1!"
4 | }
5 | greet "World"
6 | 


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/Shortener.md:
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 1 | use std::collections::HashMap;
 2 | 
 3 | fn main() {
 4 |     let mut url_map = HashMap::new();
 5 |     url_map.insert("ggl", "https://www.google.com");
 6 |     url_map.insert("yt", "https://www.youtube.com");
 7 | 
 8 |     println!("Shortened URLs:");
 9 |     for (key, url) in &url_map {
10 |         println!("{} -> {}", key, url);
11 |     }
12 | 
13 |     println!("Enter shortcode:");
14 |     let mut input = String::new();
15 |     std::io::stdin().read_line(&mut input).expect("Failed to read input");
16 |     let input = input.trim();
17 | 
18 |     match url_map.get(input) {
19 |         Some(url) => println!("Redirecting to: {}", url),
20 |         None => println!("Shortcode not found."),
21 |     }
22 | }
23 | 


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/sad.md:
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1 | puts "Hello, World!"
2 | 


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