how to write two functional components in react code example

Example 1: create functional component react

import React from 'react'; const App = () => {  const greeting = 'Hello Function Component!';   return <Headline value={greeting} />;}; const Headline = ({ value }) =>  <h1>{value}</h1>; export default App;

Example 2: create-react-app class component

npx create-react-app my-app --scripts-version [email protected]