if (x > 0) {
cout << x << " is a number.\n ";
}
if (x == "a") {
cout << x << " is a letter.\n";
}
if (x == "e") {
cout << x << " is a letter.\n";
}
if (x == "i") {
cout << x << " is a letter.\n";
}
if (x == "o") {
cout << x << " is a letter.\n";
}
if (x == "u") {
cout << x << " is a letter.\n";
}
else {
cout << x << " is a special character.\n";
}