Count_vowels

void setup() {
  print(count_vowels("camera"));
}
int count_char(char word, String sentence) {
  int totalChar = 0;
  for (int i = 0; i< sentence.length (); i++) {
    if (word == sentence.charAt(i)) {
      totalChar = totalChar + 1;
    }
  }
  return totalChar;
}
int count_vowels(String sentence) {
  int tatalVowels = 0;
  String vowels = "aeiou";
  for (int i = 0; i < vowels.length (); i++) {
    tatalVowels = tatalVowels + count_char(vowels.charAt(i), sentence);
  }
  return tatalVowels;
}