import java.util.Scanner;

public class Vowels {
    public static void main(String[] args) {

        System.out.println("Enter words");
        Scanner scanner = new Scanner(System.in);

        String string = scanner.nextLine();
        int numberOfVowels = 0;



        string.toLowerCase();

        for(int i = 0; i < string.length(); i++){

            switch (string.charAt(i)){
                case 'a':
                    numberOfVowels++;
            break;
                case 'e':
                  numberOfVowels++;
                  break;
                case 'i':
                  numberOfVowels++;
                  break;
                case 'o':
                    numberOfVowels++;
                    break;
                case 'u':
                    numberOfVowels++;
                    break;
                case 'y':
                    numberOfVowels++;
                    break;
            }
        }
        System.out.println("Number of vowels " + numberOfVowels);


    }
}