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src/App.js

 import React from 'react';
-import logo from './logo.svg';
 import './App.css';
+import Home from './Home'
+import Quiz from './Quiz'
+import End from './End'
+
+import { BrowserRouter as Router, Link, Switch, Route } from 'react-router-dom';
 
 function App() {
   return (
-    <div className="App">
-      <h2>어떤 페이지가 나올까요? ^ ^</h2>
-      궁금합니다^ ^
+    <Router>
+      <header>
+        <Link to="/">
+          <button>Calculus</button>
+        </Link>
+      </header>
+      <hr/>
+      <div>
+        <Switch>
+          <Route exact path="/">
+            <Home/>
+          </Route>
+          <Route path="/quiz">
+            <Quiz/>
+          </Route>
+          <Route path="/end">
+            <End/>
+          </Route>
+        </Switch>
       </div>
-  );
+    </Router>
+  )
 }
 
+
 export default App;
\ No newline at end of file

src/Home.js

 import React from 'react'
 import { Link } from 'react-router-dom';
 
-
 function Home() {
-    state = {
-        value: ""
-    }
+    
     return (
         <div className="Box">
             <div className="Name">
                 이름을 입력하세요
             <input onChange={(event) => {
                 console.log(event.target.value)
-                this.setState({
-                    value : event.target.value
-                })
-                }}/>
+                }
+                }/>
             </div>
+            
             {( this.state.value === null)
                 ? alert('이름을 입력하세요')    
                 : <Link to="/quiz">