Learning to write hello world is the first step to getting started in every programming language. Let’s take a look at the hello world implementation of major programming languages.

1.Java

public class HelloWorld {

    public static void main(String[] args) {

        System.out.println("Hello World!\n");

    }
}

2.C

Create a new file hello.c, the code is as follows:

#include <stdio.h>

int main() {

    printf("Hello World!\n");

    return 0;

}

Compile hello.c

gcc -o hello hello.c or clang -o hello hello.c

Execute ./hello

3.C++

Create a new file hello.cpp, the code is as follows:

#include <iostream>

using namespace std;

int main(int argc, char const *argv[]){

    cout << "Hello World!" << endl;

    return 0;

}

Compile hello.cpp

gcc -o hello hello.cpp or clang++ -o hello hello.cpp

Execute ./hello

4.Python

Create a new file hello.py, the code is as follows:

print("Hello World!")

Execute python hello.py

5.Golang

Create a new file hello.go with the following code:

package main

import "fmt"

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

Compile go build hello.go

Execute ./hello

6. Assembly

Create a new file hello.asm, the code is as follows:

section .data

msge db "Hello World!",0ah

len equ $-msge

global _start

_start:

mov eax,4 ;　　 call number 4

mov ebx,1 ;　　 ebx sends 1 to indicate output

mov ecx,msge ;　The first address of the string is sent to ecx

mov edx,$len; The length of the string is sent to edx

int 80h;　　　 output string

mov eax,1;　　 call number 1

mov ebx,0;

int 80h ;　　　 end

linux x86_64 compilation: nasm -f elf64 hello.asm connect ld -o hello hello.o

Execute ./hello

7.Rust

Create a new file hello.rs, the code is as follows:

fn main() {

    println!("Hello World!");

}

Compile rustc hello.rs

Execute ./hello

8.Lua

Create a new file hello.lua, the code is as follows:

print("Hello World!")

Execute lua hello.lua

9.Perl

Create a new file hello.pl, the code is as follows:

print "Hello World!\n";

Execute perl hello.pl

10.Ruby

Create a new file hello.rb, the code is as follows:

puts "Hello, World!"

Execute ruby ​​hello.rb

11.Nim

Create a new file hello.nim, the code is as follows:

echo "Hello World!"

Compile nim c hello.nim

Execute ./hello

12.Javascript

<script type="text/javascript">

    document.write("Hello World!");

</script>