#include <iostream>
#include <cctype>
int main() {
char character;
std::cout << "Enter a character: ";
std::cin >> character;
if (std::isalpha(character)) {
character = std::tolower(character);
if (character == 'a' || character == 'e' || character == 'i' || character == 'o' || character == 'u') {
std::cout << "The entered character is a vowel." << std::endl;
} else {
std::cout << "The entered character is a consonant." << std::endl;
}
} else {
std::cout << "Invalid input. Please enter a valid alphabetic character." << std::endl;
}
return 0;
}