<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Untitled</title>
</head>
<body>
<?php
// define function
function getCircumference($radius){
// return value
return (2*pi()*$radius);
}
//
// ex 1.
//
print "The answer is ".sprintf("%4.2f",getCircumference(20));
echo '<br />';
//
// ex 2.
//
$num=getCircumference(20);
$txtt='.';
$txt=sprintf("The answer is %4.2f%s", $num, $txtt);
echo $txt;
echo '<br />';
//
// ex 3.
//
// this prints
printf("printf: The answer is %4.2f%s", $num, $txtt);
echo '<br />';
// but, this does NOT print!!!
sprintf("sprintf: The answer is %4.2f%s", $num, $txtt);
echo '<br />';
?>
</body>
</html>
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