世界,您好!

#include<stdio.h>

int main() {
    printf("Hello World!\n");
}
#include <iostream>

int main() {
    std::cout << "Hello World!" << std::endl;
    return 0;
}
using System;

namespace ConsoleApp1 {
    class Program {
        private static void Main(string[] args) {
            Console.WriteLine("Hello World!");
        }
    }
}
public class Main {
    public static void main(String[] args){
        System.out.println("Hello World!");
    }
}
print('Hello World!')
fn main() {
    println!("Hello, world!");
}

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