Back to example ^


<?
$a = $_REQUEST[a];
$b = $_REQUEST[b];
if ( isset($a) && isset($b) )
{
$a_sqr = $a*$a;
$b_sqr = $b*$b;
$h = $a_sqr + $b_sqr;
$h = sqrt($h);
}
?>

<html><body bgcolor="#fad888">
<form>
<center>
<table border="1">
<tr>
<td colspan="2">
Enter sides a & b of a<br />
right triangle to get<br />
the hypotenuse.
</td>
</tr>
<td align="center">a </td>
<td align="center"><input type="text" cols="5" name="a"  value="<? echo "$a"; ?>" />
</td>
</tr>
<tr>
<td align="center">b </td>
<td align="center"><input type="text" cols="5" name="b"  value="<? echo "$b"; ?>" /></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" /></td>
</tr>
<tr>
<td align="center">hypotenuse</td>
<td align="center"><input type="text" cols="5" name="h"  value="<? 
if ( isset($h) )
{ echo "$h"; } ?>" /></td>
</tr>
</table>
<a href="../">^</a> <a href="pythagoras_01_c.php">PHP source</a>
</center>
</form>
<? 
include("../../bottom.txt"); 
?>

</body></html>

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