zadanie

<html>
	<head>
		<meta charset="UTF-8">
	</head>
	<body>
		<form method="GET" action="ptest.php">
			<p> a:<input type="text" name="a">	b:<input type="text" name="b">	c:<input type="text" name="c"></p>
			<p><input type="submit" name="iloczyn" value="iloczyn"></p>
			<p><input type="submit" name="max" value="max"></p>
			<p><input type="submit" name="suma" value="suma"></p>
			<p><input type="submit" name="silnia" value="silnia"></p>
		</form>
	</body>
<html>

----------------------PHP-------------------------
<html>
	<body>
		PHP
		<br/><br/>
		<?php
			$a=($_GET['a']);
			$b=($_GET['b']);
			$c=($_GET['c']);
			if($a>$b && $a>$c)//iloczyn i max
			{
				$il=$b*$c;
				$max=$a;
			}
			if($b>$a && $b>$c)
			{
				$il=$a*$c;
				$max=$b;
			}
			if($c>$b && $c>$a)
			{
				$il=$b*$a;
				$max=$c;
			}
			$sum=0;//suma
			if($a%2==0)
				$sum+=$a;
			if($b%2==0)
				$sum+=$b;
			if($c%2==0)
				$sum+=$b;
			$sil=1;//silnia
			for($i=1; $i<=$a; $i++)
				$sil*=$i;
			echo "iloczyn: ".$il."<br/>";
			echo "max: ".$max."<br/>";
			echo "suma: ".$sum."<br/>";
			echo "silnia: ".$sil."<br/>";
		?>
	</body>
</html>