大于100输出不了
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="panduan.php" method="post" >
<input type="text" name="num">
<input type="submit" value="提交">
</form>
</body>
</html>
<?php
$num=$_POST['num'];
if ($num>=0 && $num<60){
echo '不及格';
}elseif ($num>=60&&$num<70){
echo '及格了，要努力。';
}elseif ($num>=70&&$num<80){
echo '还不错。';
}elseif ($num>=80&&$num<90){
echo '上清华有希望。';
}elseif ($num>=90&&$num<100){
echo '你这辈子没希望了。';
}elseif ($num=100){
echo '更没希望了。';
}elseif ($num>100){
echo '爱因斯坦转世，思密达！';
}else {
echo '请输入正确的分数';
}
?>
