BBS水木清华站∶精华区

发信人: thinkin (强强), 信区: Linux
标  题: calculator
发信站: BBS 水木清华站 (Thu Feb 17 11:00:36 2000)

<form action="  <? echo $PHP_SELF ?>" method="post">
1st number:<input type=text name=num1><br>
2nd number:<input type=text name=num2><br>
<p>
What operation would you like to perform?<br>
<input type=radio name=operation value="plus" checked>Add<br>
<input type=radio name=operation value="minus">Subtract<br>
<input type=radio name=operation value="X">Multiply<br>
<input type=radio name=operation value="divided by">Divide<br>
<input type=submit><input type=reset>
</form>
</body>
</html>
The answer to    <? echo $num1;?>    <?echo $operation;?>    <? echo $num2;?>
is:<br>
<h1>
<?php
if ($operation ==   "plus")
{$x = $num1 + $num2;
print $x;}
elseif ($operation ==   "minus")
{$x = $num1 - $num2;
print $x;}
elseif ($operation ==   "X")
{$x = $num1 * $num2;
print $x;}
else
{$x = $num1 / $num2;
print $x;}
?>
</h1>
--

人生到处知何似？
    应似飞鸿踏雪泥。
        泥上偶然留指爪，
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