学习编程语言的第一个程序一般是输出 "Hello World"。 接下来我们来看下26 种不同语言如何输出 "Hello World"：

1. C

#include 
 
int main()
{
    printf("Hello, World");
    return(0);
}

2. C++

#include 
 
int main()
{
    std::cout << "Hello World";
    return 0;
}

3. C#

using System;
class Program
{
    public static void Main(string[] args)
    {
        Console.WriteLine("Hello, World");
    }
}

4. Bash

echo "Hello, World"

5. Basic

PRINT "Hello, World"

6. HTML

 Hello, World

7. Java

public class Main {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

8. Clipper

? "Hello, World"

9. Delphi

program HelloWorld;
begin
  Writeln('Hello, World');
end.

10. CoffeeScript

console.log 'Hello, World'

11. MatLab

disp('Hello, World')

12. Julia

println("Hello, World")

13. JavaScript

document.write('Hello, World');

14. Logo

print [Hello, World]

15. jQuery

$("body").append("Hello, World");

16. Perl 5

print "Hello, World";

17. Pascal

program HelloWorld;
begin
  WriteLn('Hello, World');
end.

18. Objective-C

#import 
#import 
 
int main(void)
{
    NSLog(@"Hello, World");
    return 0;
}

19. Visual Basic .NET

Module Module1
    Sub Main()
        Console.WriteLine("Hello, World")
    End Sub
End Module

20. R

cat('Hello, World')

21. VBScript

MsgBox "Hello, World"

22. XSLT

      Hello, World

23. Processing

void setup(){
  println("Hello, World");
}

24. Ruby

puts "Hello, World"

25. Swift

print("Hello, World")

26. Python

print ("Hello, World")