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kalkulator
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<?php
if (isset($_POST['proses'])) {
$pertama = $_POST['pertama'];
$kedua = $_POST['kedua'];
$operasi = $_POST['operasi'];
switch ($operasi) {
case 'tambah':
$hasil = $pertama + $kedua;
break;
case 'kurang':
$hasil = $pertama - $kedua;
break;
case 'kali':
$hasil = $pertama * $kedua;
break;
case 'bagi':
$hasil = $pertama / $kedua;
}
}
?>
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Script Kiddies Kalkulator Sederhana</title>
<link href="style.css" rel="stylesheet" type="text/css">
<body>
<div class="kalkulator">
<h1>KALKULATOR</h1>
<form action="" action="" method="post">
<input class="number" type="number" name="pertama" placeholder="Masukkan Bilangan Pertama">
<input class="number" type="number" name="kedua" placeholder="Masukkan Bilangan Kedua">
<select class="option" name="operasi">
<option value="tambah">+</option>
<option value="kurang">-</option>
<option value="kali">x</option>
<option value="bagi">/</option>
</select>
<input type="submit" name="proses" class="tombol" value="Hitung">
</form>
<?php if(isset($_POST['proses'])){ ?>
<input type="text" value="<?php echo $hasil; ?>" class="number">
<?php }else{ ?>
<input type="text" value="0" class="number">
<?php } ?> <br>
<a class="sumber" href="https://script-kiddies22.blogspot.com">SCRIPT KIDDIES</a>
</div>
</body>
</html>