hello world in different programming languages

Here is a "Hello, World!" program in several popular programming languages:

C:

#include <stdio.h>

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

C++:

#include <iostream>

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

Java:

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

Python:

print("Hello, World!")

JavaScript:

console.log("Hello, World!");

PHP:

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

C#:

using System;

public class Program
{
    public static void Main()
    {
        Console.WriteLine("Hello, World!");
    }
}

These programs all print the string "Hello, World!" to the console or standard output, and then terminate. The syntax and specific details of the programs may vary depending on the programming language, but the general structure and purpose are the same.

For more information about "Hello, World!" programs and other basic programming concepts in different languages, you can refer to the documentation and tutorial resources for those languages.