P1

#include <fstream>
#include <iostream>

#define vowelsCount 5

std::ifstream input("./input.txt");
std::ofstream output1("./output1.txt");
std::ofstream output2("./output2.txt");

char vowels[vowelsCount] = {'A', 'E', 'I', 'O', 'U'};

bool isVowel(char c) {
    for (int i = 0; i < vowelsCount; i++) {
        if (vowels[i] == c || vowels[i] == c + 'A' - 'a')
            return true;
    }
    return false;
}

int main (void) {
    char* s;
    while (input) {
        input>>s;
        if (isVowel(s[0])) {
            output1<<s<<"\n";
            // output1<<"\n";
        } else {
            output2<<s<<"\n";
            // output2<<"\n";
        }
    }
    return 0;
}