如何用 23 种编程语言说“Hello World”

小灰灰 2023-09-24 22:33 54阅读 0赞

在编程的世界里，" Hello World " 往往是开发者开始学习一种新语言时写的第一个程序。这个简单的程序会将 “Hello World“ 输出在我们的屏幕上。看似很简单的行为，实际上对于每一个新学习编程语言的人来说，**它代表着新的起点**。那么，如何在众多的编程语言中输出” Hello World " 呢？

#### 文章目录 ####

*   *  1. Python
     *  2. C
     *  3. C++
     *  4. Java
     *  5. C\#
     *  6. Visual Basic
     *  7. JavaScript
     *  8. SQL
     *  9. Assembly Language
     *  10. PHP
     *  11. Swift
     *  12. Go
     *  13. R
     *  14. Classic Visual Basic
     *  15. MATLAB
     *  16. Ruby
     *  17. Rust
     *  18. Scala
     *  19. Perl
     *  20. Scratch
     *  21. (Visual) FoxPro
     *  22. SAS
     *  23. Objective-C

我们一起探讨 23 种编程语言，如何在每一种语言中输出 "Hello World " 。无论你是有经验的还是初学者，阅读这篇文章，相信你一定能够有新的了解，你不可能都会吧哈哈哈！！

### 1. Python ###

print('Hello, world!')

### 2. C ###

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

### 3. C++ ###

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

### 4. Java ###

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

### 5. C\# ###

namespace HelloWorld
    {
        
      class Hello {
                 
        static void Main(string[] args)
        {
        
          System.Console.WriteLine("Hello World!");
        }
      }
    }

### 6. Visual Basic ###

Imports System
     
    Module Module1
      Sub Main()
        Console.WriteLine("Hello World!")
        Console.WriteLine("Press Enter Key to Exit.")
        Console.ReadLine()
      End Sub
    End Module

### 7. JavaScript ###

console.log('Hello World');

### 8. SQL ###

CREATE TABLE helloworld (phrase TEXT);
    INSERT INTO helloworld VALUES ("Hello, World!");
    SELECT * FROM helloworld;

### 9. Assembly Language ###

global    _start
      
              section   .text
    _start:   mov       rax, 1                  ; system call for write
              mov       rdi, 1                  ; file handle 1 is stdout
              mov       rsi, message            ; address of string to output
              mov       rdx, 13                 ; number of bytes
              syscall                           ; invoke operating system to do the write
              mov       rax, 60                 ; system call for exit
              xor       rdi, rdi                ; exit code 0
              syscall                           ; invoke operating system to exit
      
              section   .data
    message:  db        "Hello, World", 10      ; note the newline at the end

### 10. PHP ###

<!DOCTYPE html>
    <html>
    <body>
      
    <h1>My first PHP page</h1>
      
    <?php
    echo "Hello World!";
    ?>
      
    </body>
    </html>

### 11. Swift ###

print("Hello, world!")

### 12. Go ###

package main
      
    import "fmt"
      
    func main() {
        
        fmt.Println("hello world")
    }

### 13. R ###

Imports System
      
    Module Module1
      Sub Main()
        Console.WriteLine("Hello World!")
        Console.WriteLine("Press Enter Key to Exit.")
        Console.ReadLine()
      End Sub
    End Module

### 14. Classic Visual Basic ###

Imports System
      
    Module Module1
      Sub Main()
        Console.WriteLine("Hello World!")
        Console.WriteLine("Press Enter Key to Exit.")
        Console.ReadLine()
      End Sub
    End Module

### 15. MATLAB ###

function y = hello_world 
    %#codegen
    y = 'Hello World!';

### 16. Ruby ###

puts "Hello World"

### 17. Rust ###

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

### 18. Scala ###

@main def hello() = println("Hello, World!")

### 19. Perl ###

#!/usr/bin/perl
    use warnings;
    print("Hello, World!\n");

### 20. Scratch ###

say Hello World!

### 21. (Visual) FoxPro ###

Messagebox("Hello World!",64)
    ? "Hello World"

### 22. SAS ###

proc ds2 libs=work;
    data _null_;
      
      /* init() - system method */
      method init();
        declare varchar(16) message; /* method (local) scope */
        message = 'Hello World!';
        put message;
      end;
    enddata;
    run;
    quit;

### 23. Objective-C ###

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
        
      
        NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
        NSLog (@"Hello, World!");
        [pool drain];
        return YES;
      
    }

心动不如行动，赶紧试着自己选择几种编程语言，打开编程世界的大门吧~

原文链接：[程序员成长家园][Link 1]

[Link 1]: https://mp.weixin.qq.com/s/gqphGC4pHuQv4AfWKQ2bvg