Initializing multiple variables in one line C++ :     #include <iostream>
    using namespace std;
    int main() {
    cout << "input a single letter";
    int var; 
    cin >> var;
    int vowel = 'a','e','i','o','u';
    int consonant = 'b','c','d','f','g','h','j','k','l','m','n','p','q','r','s','t','v','w','x','y','z'
    if (var == vowel) {
    cout << "vowel";
    } else if (var == consonant) {
    cout << "consonant";
    } else if (var != vowel && var != consonant) {
    cout << "Error";
    }
    return 0;
    }

this is my code for a program that prompts the user to provide a single letter, and it returns to you if the letter you inputted is a vowel or consonant. I am very very new at C++ and trying to learn why I'm coming back with an error message 