#include <stdio.h>
#include <stdlib.h>

int stringLen(char **s, int *eCount) {
  int count = 0;
  int idx = 0;
  *eCount = 0;
  while (*(*s + idx) != '\0') { //(*(*s+idx)) == (*s)[idx]
    if ((*s)[idx] == 'e') {
      *eCount += 1;
    }
    count++;
    idx++;
  }
  // newline (\n) am ende soll nicht gezaehlt werden deshalb count -1 falls
  // count >0 ansonten 0 um zun verhindern dass negative stringLen
  // zurueckgegeben weird falls count = 0
  return count > 0 ? count - 1 : 0;
}
int main() {
  char *str = NULL;
  size_t size; // max allocated size of str (allocated by getdelim)
  int numberEs;
  int ret = getline(&str, &size, stdin);
  if (ret == -1) { // getline failed. free allocated mem and return
    free(str);
    return 1;
  }
  printf("read: %s", str);
  int len = stringLen(&str, &numberEs);

  printf("it is %d chars long. It contains  the letter \'e\' %d times\n", len,
         numberEs);

  free(str);
  return 0;
}