Hello world---by all language

用所有语言来打印输出Hello world! 看你喜欢哪个?

1. Python

print("Hello world!")

2. Java

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

3. PHP

<?php
echo “Hello World”;
?>

4. C

int main()
{
    printf("Hello, World! \n");
 
    return 0;
}

5. C++

using namespace std;
int main()
{
    cout << "Hello, world!" << endl;
    return 0;
}

6. Go

package main

import "fmt"

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

7. Perl

print "Hello, World!";

8. Shell

echo Hello world