#include <iostream>
int main(void) {
char ch = 'i';
int vowel = (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' ||
ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U');
if (vowel)
std::cout << "vowel";
else
std::cout << "not a vowel";
return 0;
}
/*
run:
vowel
*/