function Count() {
  const [count, setCount] = useState(0);
 
  console.log("A", count);
 
  useEffect(() => {
    console.log("B", count);
    return () => {
      console.log("C", count);
    };
  }, [count]);
 
  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>increase count</button>
    </div>
  );
}