import java.util.Scanner;

public class VowelOrConsonant04_13 {
  public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    System.out.print("Enter a letter: ");
    char __________ = ______.nextLine().charAt(__);

    if (Character.toUpperCase(_______) == '__' || Character.toUpperCase(_______) == '__' || Character.toUpperCase(______) == '__'
        || Character.toUpperCase(_______) == '__' || Character.toUpperCase(_____) == '___')
      System.out.println(_______ + " is a vowel");
    else if (Character.isLetter(letter))
      System.out.println(letter + " is a consonant");
    else
      System.out.println(letter + " is an invalid input");
  }
}1