Build a user profile using different data types:
const username = "alice_dev"
const displayName = "Alice"
let followerCount = 1234
let isVerified = false
let bio = null
console.log(`${displayName} (@${username})`)
console.log(`Followers: ${followerCount}`)
console.log(`Verified: ${isVerified}`)
console.log(`Bio: ${bio === null ? "No bio yet" : bio}`)
This pattern appears in real applications. Each variable uses the appropriate type for its purpose.