ATM System

balance = 1000.00
transactions = []

def show_menu():
    print("\n" + "="*30)
    print("      WELCOME TO PyATM")
    print("="*30)
    print("1. Check Balance")
    print("2. Deposit")
    print("3. Withdraw")
    print("4. Transaction History")
    print("5. Exit")
    print("="*30)

while True:
    show_menu()
    choice = input("Select option (1-5): ").strip()

    if choice == "1":
        print(f"\nCurrent Balance: ${balance:.2f}")

    elif choice == "2":
        try:
            amount = float(input("Deposit amount: $"))
            if amount <= 0:
                print("Amount must be positive!")
            else:
                balance += amount
                transactions.append(f"Deposit: +${amount:.2f}")
                print(f"Deposited ${amount:.2f}. New balance: ${balance:.2f}")
        except ValueError:
            print("Invalid amount!")

    elif choice == "3":
        try:
            amount = float(input("Withdraw amount: $"))
            if amount <= 0:
                print("Amount must be positive!")
            elif amount > balance:
                print(f"Insufficient funds! Balance: ${balance:.2f}")
            else:
                balance -= amount
                transactions.append(f"Withdrawal: -${amount:.2f}")
                print(f"Withdrew ${amount:.2f}. New balance: ${balance:.2f}")
        except ValueError:
            print("Invalid amount!")

    elif choice == "4":
        if not transactions:
            print("\nNo transactions yet.")
        else:
            print("\n--- Transaction History ---")
            for t in transactions:
                print(f"  {t}")

    elif choice == "5":
        print("\nThank you for using PyATM. Goodbye!")
        break
    else:
        print("Invalid option!")