Hello world from different Programing languages

Here you’ll see different helloworld programs.

Programming Languages Table

Here is a little information about programming languages.

Bash

The name is Bourne-again shell, created by Brian Fox.

• The Hello World program:

  #!/usr/bin/env bash
  
  #source "";
  
  main() {
    printf "\n\tHola Mundo Bash !!\n\n";
    printf "Numero de argumentos: %i\n" "$(($#+1))";
    for((c=0; c<=("$#"); c++)); do  
      printf "Argumento[$c] = ${!c} \n";
    done
    return ;
  }
  
  main $@;
  

• To run the file:

  bash helloWorld.sh
  

C

This is the core of all applications, created by Dennis M. Ritchie.

• To install:

  sudo apt-get install build-essentials
  

• The Hello World program:

  #include <stdio.h>
  
  int main(int argc,char* argv[]){
    int i;
    printf("\n\tHola Mundo C !!\n\n");
    printf("Numero de argumentos: %i\n",argc);
    for(i=0;i<argc;i++){
      printf("Argumento[%i] = %s\n",i,argv[i]);
    }
    return 0;
  }
  

• To run the file:

  gcc helloWorld.c -o helloWorld  && ./helloWorld
  

Converting to assembly

• Preprocessing (EXPAND MACROS):

  cpp archivo.c > archivo.i
  

• Compilation (FROM SOURCE CODE TO ASSEMBLY):

  gcc -Wall -S hello.i
  

• Assembly (FROM ASEEMBLY LANGUAGE TO MACHINE CODE):

  as hello.s -o hello.o
  

• Linking (CREATE THE FINAL EXECUTABLE):

  gcc hello.o
  

CPP (C++)

This is the core of all applications, created by Bjarne Stroustrup.

• To install:

  sudo apt-get install build-essentials
  

• The Hello World program:

  #include <iostream>
  
  using namespace std;
  
  int main(int argc,char* argv[]){
    int i;
    cout<<endl<<"\tHola Mundo C++ !!"<<endl<<endl;
    cout<<"Numero de argumentos: "<<argc<<endl;
    for(i=0;i<argc;i++){
      cout<<"Argumento["<<i<<"] = "<<argv[i]<<endl;
    }
    return 0;
  }
  

• To run the file:

  g++ helloWorld.c++ -o helloWorld && ./helloWorld
  

CS (C#)

Created by Anders Hejlsberg.

• To install:

  sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
  echo "deb https://download.mono-project.com/repo/ubuntu stable-bionic main" | sudo tee /etc/apt/sources.list.d/mono-official-stable.list
  sudo apt install mono-devel
  

• The Hello World program:

  using System;
  
  namespace HelloWorld{
    public class mainClass{
      public static void Main(string[] args){
        int argc = args.Length;
        string currentFile = new System.Diagnostics.StackTrace(true).GetFrame(0).GetFileName();
        System.Console.WriteLine("\n\tHola Mundo C# !!\n");
        System.Console.WriteLine("Numero de argumentos: {0}", argc+1);
        System.Console.WriteLine("Argumento[0] = {0}", currentFile);
        for (int i = 0; i < argc; i++){
          System.Console.WriteLine("Argumento[{0}] = {1}", i+1, args[i]);
        }
      }
    }
  }
  

• To run the file:

  mcs helloWorld.cs -out:helloWorld && ./helloWorld
  

Golang (Go)

This is the new core for a lot of applications, created by Robert Pike.

• To install:

  • To install go latest:

    wget https://storage.googleapis.com/golang/go1.9.1.linux-amd64.tar.gz
    

  • Unzip in /usr/local directory:

    sudo tar -C /usr/local -xzf go1.9.1.linux-amd64.tar.gz
    tar -C ./ -xzf go1.9.1.linux-amd64.tar.gz
    

  • Then, modify /etc/profile file, add this line:

    export PATH=$PATH:/usr/local/go/bin
    

  • Also, add these lines in /home/$USER/.profile file:

    export GOPATH=$HOME/golangProjects
    export GOROOT=$HOME/go
    export PATH=$PATH:$GOROOT/bin
    

  • Finally, reboot or execute this:

    source .profile
    sudo source /etc/profile
    

• The Hello World program:

  package main
  
  import (
    "os";
    "fmt";
  )
  
  func main() {
    fmt.Printf("\n\tHola Mundo Go !!\n\n");
    fmt.Printf("Numero de argumentos: %d\n", len(os.Args));
    for i,e := range os.Args {
      fmt.Printf("Argumento[%d] = %s\n", i, e);
    }
    return ;
  }
  

• To run the file:

  go build -o helloWorld helloWorld.go && ./helloWorld
  

Java

Its a one important programming language in software development, created by James A. Gosling.

• To install:

  sudo add-apt-repository ppa:webupd8team/java
  sudo apt-get update
  sudo apt-get install oracle-java8-installer
  sudo apt-get install oracle-java8-set-default
  

• The Hello World program:

  class HelloWorld {
    public static void main(String[] args) {
      int argc = args.length;
      System.out.println("\n\tHola Mundo Java !!\n");
      System.out.printf("Numero de argumentos: %d\n", argc+1);
      System.out.printf("Argumento[0] = %s\n", "nombre del archivo");
      for(int i =0; i<argc; i++) {
        System.out.printf("Argumento[%d] = %s\n", i+1, args[i]);
      }
    }
  }
  

• To run the file:

  javac helloWorld.java
  java HelloWorld
  

JavaScript (JS)

Another important programming language, created by Brendan Eich.

• To install (also, you can run in web browser):

  curl -sL https://deb.nodesource.com/setup_6.x -o nodesource_setup.sh
  nano nodesource_setup.sh
  sudo bash nodesource_setup.sh
  sudo apt-get install nodejs npm
  npm install [package]
  

• The Hello World program:

  #!/usr/bin/env nodejs
  
  var path = require('path');
  
  function main(argv){
    var argc = argv.length;
    console.log('\n\tHola Mundo Javascript !!\n');
    console.log(`Numero de argumentos: ${(argv.length-1)}`);
    console.log('Argumento[0] = ' + path.basename(argv[1]))
    for (i=2; i< argc; i++){
      console.log(`Argumento[${i-1}] = ${argv[i]}`);
    }
    return;
  }
  
  main(process.argv)
  

• To run the file:

  nodejs helloWorld.js
  

M (Octave/MATLAB)

An important programming languages to many applications in numeric fields, created by Jhon W. Eaton.

• To install:

  sudo apt-get install octave liboctave-dev
  

• The Hello World program:

  #!/usr/bin/env octave
  
  #pkg install control-1.0.0.tar.gz
  #pkg install control
  #pkg load control
  #addpath(genpath('./../locallib'));
  
  a=3;
  
  function []=main(argcs,argvs)
    printf("\n\tHola Mundo M !!\n\n");
    printf("Numero de argumentos: %i\n",argcs+1);
    printf("Argumento[0] = %s\n",program_name());
    for i = 1:argcs
      printf("Argumento[%i] = %s\n",i,argvs{i});
    end
    return;
  end
  
  main(nargin(),argv())
  

• To run the file:

  octave helloWorld.m
  

Perl (PL)

Important language to develop http servers, created by Larry Wall.

• To install:

  sudo apt-get install perl
  

• The Hello World program:

  #!/usr/bin/env perl
  
  use strict;
  use warnings;
  
  sub main{
    my @argv = @_;
    my $argc = (@argv);
    print("\n\tHola Mundo Perl !!\n\n");
    print("Numero de argumentos: ".($argc+1)."\n");
    print("Argumento[0] = $0\n");
    foreach my $i(0..($argc-1)){
      print("Argumento[".($i+1)."] = $argv[$i]\n");
    }
    return;
  }
  
  main(@ARGV);
  

• To run the file:

  perl helloWorld.pl
  

PHP

Important language to develop web servers, created by Rasmus Lerdorf.

• To install:

  sudo apt-get install php7.0 composer
  composer install [package]
  

• The Hello World program:

  #!/usr/bin/env php
  
  <?php
  class HelloWorld{
    public static function main($arguments, $count){
      print("\tHola Mundo PHP !!\n\n");
      print("Numero de argumentos: $count\n");
      foreach($arguments as $key => $value){
        print("Argumento[$key] = $value\n");
      }
      return;
    }
  }
  HelloWorld::main($argv, $argc);
  ?>
  

• To run the file:

  php helloWorld.php
  

Python

A very important programming language, created by Guido van Rossum.

• To install:

  sudo apt-get install python python-pip
  pip install [package]
  

• The Hello World program:

  #!/usr/bin/env python
  
  # -*- coding: utf-8 -*-
    
  #from locallib import *
  import sys
  
  def main(argv):
    print("\n\tHola Mundo Python !!\n");
    argc = len(sys.argv);
    print("Numero de argumentos: %i" %(argc));
    for i in range(argc):
      print("Argumento[%i] = %s" %(i,sys.argv[i]));
    return;
  
  if __name__ == "__main__":
    main(sys.argv[1:]);
  

• To run the file:

  python helloWorld.py
  

R

An important statistic language, created by Robert C. Gentleman.

• To install:

  sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
  sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/'
  sudo apt-get update
  sudo apt-get install r-base r-base-dev
  

• The Hello World program:

  #!/usr/bin/env Rscript
  
  #library(stats);
  
  printf <- function(...){ invisible(cat(sprintf(...)))}
  
  main<-function(argsv){
    printf("\n\tHola Mundo R !!\n\n");
    argc<-length(argsv);
    argsv[4] = strsplit(argsv[4],"--file=")[[1]][2]
    if(argc>5){ printf("Numero de argumentos: %d\n",argc-4);}
    else{ printf("Numero de argumentos:",argc-3,"\n");}
    printf("Argumento[0] = %s\n",argsv[4]);
    if(argc>5){
      for(i in 6:argc){
        printf("Argumento[%d] = %s \n",i-5, argsv[i])
      }
    }
    return ();
  }
  
  mainf<-main(commandArgs(trailingOnly = FALSE));
  

• To run the file:

  Rscript helloWorld.R
  

Ruby

Important to develop services, created by Yukihiro “Matz” Matsumoto.

• To install:

  sudo apt-get install ruby-full ruby-dev ruby gem
  gem install [package]
  

• The Hello World program:

#!/usr/bin/env ruby

#require 'io/console';

def main(argv)
  argc = argv.length;
  print("\n\tHola Mundo Ruby !!\n\n");
  print("Numero de argumentos: #{argc+1}\n");
  print("Argumento[0] = #{File.basename(__FILE__)}\n");
  for i in 0...argc
    print("Argumento[#{i+1}] = #{argv[i]}\n");
  end
  return;
end

main ARGV;

• To run the file:

  ruby helloWorld.rb