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Login Attempt Program with Limit in C#

In this task, you will create a login verification program in C# that asks the user for their login and password. The program will repeat the prompt until the correct login and password are entered, but it will limit the user to a maximum of three attempts. If the user exceeds the allowed number of attempts, the program should inform them and terminate. This exercise demonstrates how to implement loops, conditional statements, and attempt limitations in user input scenarios.



Group

C# Flow Control Basics

Objective

The objective of this exercise is to write a C# program to prompt the user to enter their login and password (both must be integer numbers) and repeat the prompt as many times as necessary until the entered login is "12" and the password is "1234".

Example C# Exercise

 Copy C# Code 
// First and Last Name: John Doe

using System;

namespace LoginVerificationWithLimit
{
    class Program
    {
        static void Main(string[] args)
        {
            // Declare variables for login, password, and attempts counter
            int login, password;
            int attempts = 0;

            // Loop to ask for login and password until correct values or maximum attempts are reached
            while (attempts < 3)
            {
                // Prompt user to enter login
                Console.Write("Enter login: ");
                login = int.Parse(Console.ReadLine()); // Read and convert the login to an integer

                // Prompt user to enter password
                Console.Write("Enter password: ");
                password = int.Parse(Console.ReadLine()); // Read and convert the password to an integer

                // Check if the entered login and password are correct
                if (login == 12 && password == 1234)
                {
                    Console.WriteLine("Login successful!"); // If correct, display success message
                    break; // Exit the loop since login is successful
                }
                else
                {
                    attempts++; // Increment the attempt counter
                    if (attempts < 3) // If there are remaining attempts
                    {
                        Console.WriteLine("Incorrect login or password. Try again.");
                    }
                    else
                    {
                        Console.WriteLine("You have reached the maximum number of attempts.");
                    }
                }
            }
        }
    }
}

 Output

//Example 1: (Incorrect entries with the limit reached)
Enter login: 15
Enter password: 1234
Incorrect login or password. Try again.
Enter login: 12
Enter password: 5678
Incorrect login or password. Try again.
Enter login: 14
Enter password: 1234
Incorrect login or password. Try again.
You have reached the maximum number of attempts.

//Example 2: (Successful login on the second attempt)
Enter login: 15
Enter password: 1234
Incorrect login or password. Try again.
Enter login: 12
Enter password: 1234
Login successful!

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