Write a Python program to test whether a passed letter is a vowel or not.

Introduction:

This program test whether a passed letter is vowel or not.

PROGRAM:

def is_vowel(char):
    all_vowels = 'aeiou'
    return char in all_vowels
print(is_vowel('c'))
print(is_vowel('e'))				 

Output:  

True

False