1
using System;
2
 
3
using System.Collections.Generic;
4
 
5
class TaskManager
6
 
7
{
8
 
9
    private List<string> tasks = new List<string>();
10
 
11
    public void AddTask(string task)
12
 
13
    {
14
 
15
        tasks.Add(task);
16
 
17
        Console.WriteLine($"Task '{task}' added.");
18
 
19
    }
20
 
21
    public void RemoveTask(int index)
22
 
23
    {
24
 
25
        if (index < 0 || index >= tasks.Count)
26
 
27
        {
28
 
29
            Console.WriteLine("Invalid task index.");
30
 
31
            return;
32
 
33
        }
34
 
35
        Console.WriteLine($"Task '{tasks[index]}' removed.");
36
 
37
        tasks.RemoveAt(index);
38
 
39
    }
40
 
41
    public void DisplayTasks()
42
 
43
    {
44
 
45
        if (tasks.Count == 0)
46
 
47
        {
48
 
49
            Console.WriteLine("No tasks available.");
50
 
51
            return;
52
 
53
        }
54
 
55
        Console.WriteLine("Tasks:");
56
 
57
        for (int i = 0; i < tasks.Count; i++)
58
 
59
        {
60
 
61
            Console.WriteLine($"{i + 1}. {tasks[i]}");
62
 
63
        }
64
 
65
    }
66
 
67
}
68
 
69
class Program
70
 
71
{
72
 
73
    static void Main()
74
 
75
    {
76
 
77
        TaskManager taskManager = new TaskManager();
78
 
79
        string input;
80
 
81
        Console.WriteLine("Task Manager");
82
 
83
        Console.WriteLine("Commands: add <task>, remove <task number>, list, exit");
84
 
85
        do
86
 
87
        {
88
 
89
            Console.Write("> ");
90
 
91
            input = Console.ReadLine();
92
 
93
            string[] commandParts = input.Split(' ', 2);
94
 
95
            string command = commandParts[0].ToLower();
96
 
97
            switch (command)
98
 
99
            {
100
 
101
                case "add":
102
 
103
                    if (commandParts.Length > 1)
104
 
105
                    {
106
 
107
                        taskManager.AddTask(commandParts[1]);
108
 
109
                    }
110
 
111
                    else
112
 
113
                    {
114
 
115
                        Console.WriteLine("Please specify a task to add.");
116
 
117
                    }
118
 
119
                    break;
120
 
121
                case "remove":
122
 
123
                    if (commandParts.Length > 1 && int.TryParse(commandParts[1], out int index))
124
 
125
                    {
126
 
127
                        taskManager.RemoveTask(index - 1);
128
 
129
                    }
130
 
131
                    else
132
 
133
                    {
134
 
135
                        Console.WriteLine("Please specify a valid task number to remove.");
136
 
137
                    }
138
 
139
                    break;
140
 
141
                case "list":
142
 
143
                    taskManager.DisplayTasks();
144
 
145
                    break;
146
 
147
                case "exit":
148
 
149
                    Console.WriteLine("Exiting Task Manager.");
150
 
151
                    break;
152
 
153
                default:
154
 
155
                    Console.WriteLine("Unknown command. Try 'add', 'remove', 'list', or 'exit'.");
156
 
157
                    break;
158
 
159
            }
160
 
161
        } while (input.ToLower() != "exit");
162
 
163
    }
164
 
165
}
166