1、C语言：
#include <stdio.h>
int main()
{
printf("Hello, World! \n");
return 0;
}
2、html:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>hello world</title>
</head>
<body>
<h1>HELLO WORLD</h1>
</body>
</html>
3、JS:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>hello world</title>
</head>
<body>
<p id="demo">
<script>
document.getElementById("demo").innerHTML="HELLO WORLD";
</script>
</body>
</html>
4、PHP:
<!DOCTYPE html>
<html>
<body>
<?php
echo "Hello World!";
?>
</body>
</html>
5、C++:
#include <iostream>
using namespace std;
int main()
{
cout << "Hello, world!" << endl;
return 0;
}
6、PYTHON:
#!/usr/bin/python
print("Hello, World!")
