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 |
| % |
| 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
| |
| 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_; |
| |
| |
| method init(); |
| declare varchar(16) message; |
| 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~