diff --git a/react-17.0.2/index.js b/react-17.0.2/index.js
index 7ccec15..d9e350f 100644
--- a/react-17.0.2/index.js
+++ b/react-17.0.2/index.js
@@ -1,5 +1,10 @@
function App() {
- return
Hello, React Source Code!
+ const [count, setCount] = React.useState(0)
+ return
+
Hello, React Source Code!
+
Number: {count}
+
+
}
ReactDOM.render(, document.querySelector('#app'))
\ No newline at end of file