// Example 10 from page 11 of Java Precisely second edition (The MIT Press 2005)
// Author: Peter Sestoft (sestoft@itu.dk)


class Example10 {
  public static void main(String[] args) {
    System.out.println(ecount(""));
    System.out.println(ecount("hjsdafj yew eqwh ge Ee"));
    System.out.println(ecount("hjsdafj yew fqwh gf Ef"));
  }

  static int ecount(String s) {
    int ecount = 0;
    for (int i=0; i<s.length(); i++)
      if (s.charAt(i) == 'e') 
        ecount++;
    return ecount;
  }
}