hell0 world多种语言展示：

1. Python:

   print("Hello, World!")
   

2. JavaScript (Node.js):

   console.log("Hello, World!");
   

3. Java:

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

4. C:

   #include <stdio.h>
   
   int main() {
       printf("Hello, World!\n");
       return 0;
   }
   

5. C++:

   #include <iostream>
   
   int main() {
       std::cout << "Hello, World!" << std::endl;
       return 0;
   }
   

6. C#:

   using System;
   
   class Program {
       static void Main() {
           Console.WriteLine("Hello, World!");
       }
   }
   

7. Ruby:

   puts "Hello, World!"
   

8. PHP:

   <?php
   echo "Hello, World!";
   ?>
   

9. Swift:

   print("Hello, World!")
   

10. Go:

    package main
    
    import "fmt"
    
    func main() {
        fmt.Println("Hello, World!")
    }
    

11. Kotlin:

    fun main() {
        println("Hello, World!")
    }
    

12. Rust:

    fn main() {
        println!("Hello, World!");
    }
    

13. Perl:

    print "Hello, World!\n";
    

14. R:

    cat("Hello, World!\n")
    

15. MATLAB/Octave:

    disp('Hello, World!')
    

16. Bash:

    echo "Hello, World!"
    

17. Haskell:

    main = putStrLn "Hello, World!"
    

18. Scala:

    object HelloWorld {
        def main(args: Array[String]): Unit = {
            println("Hello, World!")
        }
    }
    

19. Objective-C:

    #import <Foundation/Foundation.h>
    
    int main(int argc, const char * argv[]) {
        @autoreleasepool {
            NSLog(@"Hello, World!");
        }
        return 0;
    }
    

20. Dart:

    void main() {
        print('Hello, World!');
    }