oldBooks

function oldBooks(input) {
    let index = 0;
    let favoriteBook = input[0];
    index++;

    let command = input[index];
    index++;
    let counter = 0;

    let isFound = false;

    while (command !== "No More Books") {
        let book = command;
        if (favoriteBook === book) {
            console.log(`You checked ${counter} books and found it.`);
            isFound = true;
            break;
        }
        counter++;
        command = input[index];
        index++;
    }

    if (!isFound) {
        console.log(`The book you search is not here!`);
        console.log(`You checked ${counter} books.`);
    }
}


oldBooks(["The Spot",
    "Hunger Games",
    "Harry Potter",
    "Torronto",
    "Spotify",
    "No More Books"])