程嶏清单12-5.txt

来自「< linux网络编程工具>>配套源码」· 文本 代码 · 共 5 行

$a = 0.255;
$b = sprintf("%.2f", $a);
print "Unrounded: $a\nRounded: $b\n";
printf "Unrounded: $a\nRounded: %.2f\n", $a;