while True:

​

    user_input = input("Enter a value (A-Z, a-z, 1-10): ")

​

    if len(user_input) == 1:

​

        char = user_input[0]

​

        if 'A' <= char <= 'Z':

​

            ascii_value = ord(char)

​

            print(f"ASCII value of {char}: {ascii_value}")

​

        elif 'a' <= char <= 'z':

​

            ascii_value = ord(char)

​

            print(f"ASCII value of {char}: {ascii_value}")

​

        elif '1' <= char <= '10':

​

            ascii_value = ord(char)

​

            print(f"ASCII value of {char}: {ascii_value}")

​

        else:

​

            print("Invalid input. Please try again.")

​

    else:

​

        print("Invalid input. Please enter a single character.")