Question 11:
Write a Python program to check whether a given character is a vowel or consonant.

Answer:
def main(char: str) -> None:
    vowels = 'aeiou'
    if char.lower() in vowels:
        print(f"{char} is a vowel.")
    elif char.isalpha():
        print(f"{char} is a consonant.")
    else:
        raise ValueError("Invalid input. Please enter an alphabetic character.")
        

if __name__ == '__main__':
    main('a')
    main('b')
    main('A')
    main('1') # also works with a int


Output:
Traceback (most recent call last):
  File "\\homeassistant.local\share\data\school\Grade 11 CS\Practical File\question_11.py", line 17, in <module>
    main('1') # also works with a int
    ^^^^^^^^^
  File "\\homeassistant.local\share\data\school\Grade 11 CS\Practical File\question_11.py", line 10, in main
    raise ValueError("Invalid input. Please enter an alphabetic character.")
ValueError: Invalid input. Please enter an alphabetic character.