def reverse_string(input_str):
    reversed_str = ""
    for char in input_str:
        reversed_str = char + reversed_str
    return reversed_str

while True:
    user_input = input("Enter a string (or type 'exit' to quit): ")

    if user_input.lower() == 'exit':
        print("Exiting the program.")
        break
    reversed_input = reverse_string(user_input)
    print("Reversed string:", reversed_input)