Solution: Secure ATM PIN Validation
Review the implementation of loop-based state management and early exit strategies to build a robust security validation flow.
Solution: Secure ATM PIN Validation
Review the implementation of loop-based state management and early exit strategies to build a robust security validation flow.
const int correctPin = 1234;
int attempts = 0;
const int maxAttempts = 3;
bool isAuthenticated = false;
Console.WriteLine("=== ATM PIN Validation ===");
while (attempts < maxAttempts)
{
attempts++;
Console.Write($"Attempt {attempts}/{maxAttempts}. Enter PIN: ");
string input = Console.ReadLine();
if (int.TryParse(input, out int enteredPin))
{
if (enteredPin == correctPin)
{
isAuthenticated = true;
break; // Exit the loop immediately on success
}
else
{
Console.WriteLine("Incorrect PIN.");
}
}
else
{
Console.WriteLine("Invalid input. Please enter numbers only.");
}
}
if (isAuthenticated)
{
Console.WriteLine("Access Granted. Welcome back!");
}
else
{
Console.WriteLine("Too many failed attempts. Your account is locked.");
}The complete solution of the ATM PIN validation logic using a while loop and break statement