const { useState } = React;

function PageComponent() {
  const [count, setCount] = useState(0);
  const increment = () => {
    setCount(count + 1)
  }

  return (
    

               
      
count {count}
      (count should be updated from child)
    
  );
}

const ChildComponent = ({ onClick, count }) => {
  return (
    
       Click me {count}
    
  )
};

ReactDOM.render(, document.getElementById("root"));