text: #include <iostream>
  
  int main() {
  
    char ch;
    unsigned int aCnt = 0, eCnt = 0, iCnt = 0, oCnt = 0, uCnt = 0;
  
    while (std::cin >> ch) {
      // if ch is a vowel, increment the appropriate counter
      if (ch == 'a')
        ++aCnt;
      else if (ch == 'e')
        ++eCnt;
      else if (ch == 'i')
        ++iCnt;
      else if (ch == 'o')
        ++oCnt;
      else if (ch == 'u')
        ++uCnt;
    }
  
    std::cout << "Number of vowel a: \t" << aCnt << '\n' << "Number of vowel e: \t"
         << eCnt << '\n' << "Number of vowel i: \t" << iCnt << '\n'
         << "Number of vowel o: \t" << oCnt << '\n' << "Number of vowel u: \t"
         << uCnt << '\n';
  
    return 0;
  }
  