count e

#include <iostream>
#include <vector>
using namespace std;
int countE(const string &s) {
  int count = 0;
  for (unsigned int i = 0; i < s.size(); i++) {
    if (s.at(i) == 'e') count++;
  }
  return count;
}
int main() {
  vector<string> v = { (string) "aed", (string) "i have a pen", (string) "eeefff" };
  for (string &s: v) {
    cout << s << " " << countE(s) << endl;
  }
}