//javascript
function none(){
}
/** javascript
jscript
*/
var reg = /[\/][*]([\S\s]*?)(?:[*][/;\[\]]|$)|[\/][/g;](.*)|"((?:\\\\|\\"|[^"])*)"|'((?:\\\\|\\'|[^'])*)'/gm;
a / b
/reg/;
var num1 = 0.541f;
//java
import java.util.*;

public class Test {
	StringBuilder sb = new StringBuilder();
	sb.append("Hello ");
	sb.append("World!");
	public static void main(String[] args) {
		if(true) {
			System.out.println(sb.toString());
		}
		else {
			System.out.println(in());
		}
	}
	private static String in() {
		return "in" + 1;
	}
}
//unknow
int i = 0;
//Action Script
var s:String = "Hello World!";
var n:Number = 3;
function printString(str:String) {
	trace(str);
}
//c
#include "stdio.h"
int main() {
	int i = 0;
	for(; i < 10; i++) {
		printf("Hello World!");
	}
	return 0;
}
//cpp
#include "iostream.h"
using namespace std;
int main () {
	char c = 'c';
	cout << "Hello World!";
	return 0;
}
<!--html-->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<link rel="icon" href="style.css">
<html>
	<head>
		<title>jssc4</title>
		<style>
			body {
				font-size: 12px;
			}
		</style>
	</head>
	<body>
		<div name="test">"content"</div>
		<p style="border: 1px solid #f33;"
		name="p">我来跨行
		<br /><img src="img.jpg"
		alt="再次
		跨行"></p>
	</body>
</html>
/*css*/
body { font-size: 9pt; }
#fff {
	background-color: #fff;
	margin: 0px;
	padding: -20px;
	font-family: "Arail 宋体"; /*字体
	arail
	color: #fff;
	*/position: absolute;/**/
}
.13f {
}
$i = 0;
echo $i.'Hello World.';