a

src/Admin.js

 import React, { useState } from 'react';
-import AdminQuiz from './AdminQuiz';
+import AdminQuiz from './AdminQuiz'
 import AdminSetting from './AdminSetting'
-// import { Link } from 'react-router-dom';
 
 
-
-let QuizBtn = []
+let QuizBtn=[]
 
 function Admin() {
 
+    const[result, setresult] = useState('')
+    const[QuizBtnCount, setQuizBtnCount] = useState(4)
 
-    const [result, setresult] = useState('')
-    // const [addQuiz, setaddQuiz] = useState('')
-    const [QuizBtnCount, setQuizBtnCount] = useState(4)
-
-
-    function handleClickSetting() {
-        setresult(<AdminSetting />)
+    function handleClickSetting(){
+        setresult(<AdminSetting/>)
     }
 
-    function handleClickQuiz() {
-        setresult(<AdminQuiz />)
+    function handleClickQuiz(){
+        setresult(<AdminQuiz/>)
     }
     
-    function handleClickAddQuiz() {
-        QuizBtn.push(
-            <button type="button" className="btn btn-outline-primary" id={QuizBtnCount} onClick={handleClickQuiz}>Quiz {QuizBtnCount}</button>
+    function handleClickAddQuiz(){
+        QuizBtnCount.push(
+            <button type='button' className='btn btn-outline-primary' id={QuizBtnCount} onClick={handleClickQuiz}>Quiz {QuizBtnCount}</button>
         )
-        setQuizBtnCount(QuizBtnCount + 1)
+        setQuizBtnCount(QuizBtnCount+1)
     }
 
     return (