write c++ program to read the input and check whether it is vowel or consonant by using switch statement only

#include <iostream>
using namespace std;

int main()
{
  char c;
  cout << "Enter an alphabet: ";
  cin >> c;
  switch(c)
  {
      case 'a':
      case 'e':
      case 'i':
      case 'o':
      case 'u':
      case 'A':
      case 'E':
      case 'I':
      case 'O':
      case 'U':
      cout<<"letter is vowel";
      break;
      case 'b':
      case 'c':
      case 'd':
      case 'f':
      case 'g':
      case 'h':
      case 'j':
      case 'k':
      case 'l':
      case 'm':
      case 'n':
      case 'p':
      case 'q':
      case 'r':
      case 's':
      case 't':
      case 'v':
      case 'w':
      case 'x':
      case 'y':
      case 'z':
      case 'B':
      case 'C':
      case 'D':
      case 'F':
      case 'G':
      case 'H':
      case 'J':
      case 'K':
      case 'L':
      case 'M':
      case 'N':
      case 'P':
      case 'Q':
      case 'R':
      case 'S':
      case 'T':
      case 'V':
      case 'W':
      case 'X':
      case 'Y':
      case 'Z':
      cout<<"letter is consonant";
      break;
      default:
      cout<<"Error! Non-alphabetic character.";
  }
  return 0;
}