Printing ‘Hello World’ in 20 Programming Languages

Programming is a highly sought-after skill in today’s digital world. Whether you’re looking to start a new career or simply expand your existing skillset, learning to code is an excellent way to open up new opportunities. One of the simplest, yet most impactful, programs you can write as a beginner is “Hello World”. This program serves as an introduction to the basic syntax and structure of a programming language.

In this comprehensive guide, we will show you how to print “Hello World” in 20 of the most popular programming languages. This will provide you with a foundational understanding of how different programming languages approach the task of printing a simple message on the screen. So, get ready to dive into the world of coding and let’s get started!

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Printing 'Hello World' in 20 Programming Languages

Python

Python uses the print() method to print a string on the console. The string must be enclosed under double quotes.

print("Hello World")

Java

In Java, the System.out.println() method is used to print content on the output console. This method prints the string and moves the cursor to a new line.

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

C Programming

In the C programming language, the printf() function is used to print values on the output console.

#include

int main() {
    printf("Hello World");
    return 0;
}

C++ Programming

C++ uses std::cout along with the stream insertion operator << for output operations. std::endl is used to insert a new line.

#include

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

Ruby

Ruby uses the puts method to output text with a newline at the end.

puts "Hello World"

PHP

PHP uses the echo statement to output one or more strings.

<?php
    echo "Hello World";
?>

JavaScript

JavaScript uses console.log() to print messages to the web console.

console.log("Hello World");

Swift

Swift uses the print() function to write the textual representation of the given items to the standard output.

print("Hello World")

Go Programming

Go uses the fmt.Println() function from the fmt package to print lines.

package main

import "fmt"

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

Kotlin

Kotlin uses the println() function for printing a line to the standard output.

fun main(args: Array) {
    println("Hello World")
}

R Programming

R uses the cat() function to concatenate and print.

cat("Hello World")

Perl Programming

Perl uses the print function to output text. The newline character \n is used to move to the next line.

print "Hello World\n";

Scala

Scala uses the println() method, similar to Java, for printing lines.

object HelloWorld {
    def main(args: Array[String]) {
        println("Hello World")
    }
}

Objective-C

Objective-C uses NSLog() for logging, which is similar to printf() but adds some extra information like timestamp and log level.

#import 

int main (int argc, const char * argv[]) {
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    NSLog (@"Hello World");
    [pool drain];
    return 0;
}

Shell Scripting

Shell scripting uses the echo command to output text to the terminal.

echo "Hello World"

Assembly (x86) Programming

Assembly language for x86 processors uses a combination of system calls to write text to the console and to exit a program.

section .data
    msg db 'Hello World',0

section .text
    global _start

_start:
    ; write(1, msg, 12)
    mov eax, 4
    mov ebx, 1
    mov ecx, msg
    mov edx, 12
    int 0x80

    ; exit(0)
    mov eax, 1
    xor ebx, ebx
    int 0x80

SQL Statement

In SQL, you can use the SELECT statement to output a string.

SELECT 'Hello World';

Rust Programming

Rust uses the println!() macro for printing to the console.

fn main() {
    println!("Hello World");
}

TypeScript

TypeScript, being a superset of JavaScript, uses console.log() for printing messages to the console.

console.log("Hello World");

Lua Programming

Lua uses the print() function to send text to the standard output.

print("Hello World")

Conclusion

In conclusion, "Hello World" is a simple yet powerful program that helps beginners understand the basic syntax and structure of a new programming language. By printing "Hello World" in 20 popular programming languages, we hope to provide a comprehensive guide to help those new to the program understand how the syntax and structure of a program can vary between languages. Whether you are just starting out or looking to expand your skills, this guide serves as a valuable resource to help you get started. Regardless of the language you choose, the most important aspect is to keep practicing and building on your skills. Happy coding!