input: Write a python function to check if a string is a palindrome.
  assert check_palindrome("madam") == "The string is a palindrome"
  assert check_palindrome("racecar") == "The string is a palindrome"
  assert check_palindrome("hello") == "The string is not a palindrome"
output: def check_palindrome(s):
      if s == s[::-1]:
          return "The string is a palindrome"
      else:
          return "The string is not a palindrome"