<html>
<head>
<meta charset="utf-8">
<title>2</title>
</head>
<body>
<form action="new.php" method="post">
<input type="text" name="a" placeholder="1. bok">
<input type="text" name="b" placeholder="2. bok">
<input type="text" name="c" placeholder="3. bok">
<input type="text" name="h" placeholder="wysokosc">
<input type="submit" name="wynik"/>
</form>
</body>
</html>
<?php
$a=$_POST['a'];
$b=$_POST['b'];
$c=$_POST['c'];
$h=$_POST['h'];
$x=$a+$b+$c;
echo $x;
echo '<br>';
$y=$a*$h;
$z=$y/2;
echo $z;
?>
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}