Hello World!

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#include<stdio.h>

int main(){
    printf("hello world\n");
    return 0;
}
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#include<iostream>

int main(){
    std::cout << "hello world! << std::endl;
    return 0;
}
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#!/usr/bin/python3
 
print("Hello, World!")
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package main

import "fmt"

func main() {
    fmt.Println("Hello, World!")
}
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public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello World");
    }
}
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<!DOCTYPE html>
<html>
<body>

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

</body>
</html>