function helloWorld(name) {
    // This is a simple function
    const greeting = `Hello, ${name}!`;
    console.log(greeting);
}

class User {
    constructor(id, username) {
        this.id = id;
        this.username = username;
    }

    displayInfo() {
        return `User ID: ${this.id}, Username: ${this.username}`;
    }
}

const myUser = new User(1, 'Alice');
console.log(myUser.displayInfo());