'Hello, world': Programming languages quiz

	MARCH 26, 2012
	'Hello, world': Programming languages quizName that language: 20 'Hello, world' programs to test your polyglot programming mettleBy Neil McAllister|Print|26 Comments



	You got 17 of 20 correct.
	Your score: 85%
	Your responsesQuestion 1:/* Program: helloWorld */#include<stdio.h>int main(void) {
			printf("Hello, world!\n");
			return 0;
	}


	Correct Answer: C
	Your Answer: C
	The godfather of modern imperative language syntax, you can recognize C by its header files (with the *.h extension) and its slash-and-asterisk comment delimiters.
	Question 2:// Program: helloWorldfunction helloWorld() {
			document.write("Hello, world!");
	}
	Correct Answer: JavaScript
	Your Answer: JavaScript
	The Web's scripting language still resembles C and its cousins, but its syntax is a little more verbose. The I/O based on the document object is a dead giveaway.
	Question 3:# Program: helloWorlddefhelloWorld():
			print "Hello, world!"
			return
	Correct Answer: Python
	Your Answer: Python
	Compared to the other popular scripting languages, Python does away with C-like syntax, with its braces and other punctuation marks, in favor of natural-language keywords and code blocks based on whitespace indentation.
	Question 4:// Program: helloWorldclass helloWorld {
			public static void main(String[] args) {
					System.out.println("Hello, world!");
			}
	}


	Correct Answer: Java
	Your Answer: Java
	Java looks a lot like C and C++, but it's more strictly object-oriented and uses a different syntax for classes, methods, and types.
	Question 5:# Program: helloWorldsubhelloWorld {
			print"Hello, world!\n";
	}


	Correct Answer: Perl
	Your Answer: Perl
	You can tell it's a scripting language because it uses the hash symbol (#) to denote comments. Unlike its competitors, however, the concepts of functions, methods, and subroutines are interchangeable in Perl, and all are defined using the keyword sub.
	Question 6:// Program: helloWorld#include<iostream>usingnamespace std;
	int main()
	{
			cout << "Hello, World!" << endl;
			return0;
	}


	Correct Answer: C++
	Your Answer: C++
	The object-oriented successor to C looks a lot like its older sibling, but C++ is easy to spot by its simplified, single-line comments and its stream-based console I/O.
	Question 7:# Program: helloWorldclass HelloWorld
		defgreet
			puts "Hello, world!"
		endend
	Correct Answer: Ruby
	Your Answer: Ruby
	Ruby's class and method definition syntax resembles that of Python, but unlike that language, definitions in Ruby must be closed with the end keyword.
	Question 8:;; Program: helloWorld

	(write-line"Hello, world!")


	Correct Answer: Lisp
	Your Answer: Lisp
	You can always tell a Lisp program by its signature parentheses -- in real programs they are often nested many levels deep. This program's particular dialect is Common Lisp.
	Question 9:' Program: helloWorld

	Imports System
	Public Module helloWorld
			Sub Main()
					Console.WriteLine ("Hello, world!")
			End SubEnd Module


	Correct Answer: Visual Basic
	Your Answer: Visual Basic
	Microsoft's often-criticized language bears little resemblance to the Basic that was popular in the 1980s, but you can still spot Visual Basic by its single-quote comment delimiters. The example uses the modern Visual Basic .Net syntax.
	Question 10:// Program: helloWorldobject helloWorld {
			def main(args: Array[String]) {
					Console.println("Hello, world!");
			}
	}


	Correct Answer: Scala
	Your Answer: Scala
	As a JVM language, Scala borrows much from Java, but its syntax is more compact and has a few twists of its own. Watch for the object and def keywords, which aren't used in Java.
	Question 11:-- Program: helloWorldmodule helloWorld where

	main = putStrLn "Hello, world!"
	Correct Answer: Haskell
	Your Answer: Cobol
	As a functional language, Haskell's syntax differs from most of the languages in this quiz. It can be spotted by its unusual, compact syntax and its double-dash comment delimiter.
	Question 12:{ Program: helloWorld }Program helloWorld(output);
	Begin
			WriteLn('Hello, world!')
	End.


	Correct Answer: Pascal
	Your Answer: Pascal
	One of the earlier structured programming languages, Pascal's syntax is verbose by today's standards, but it remains eminently readable. Unlike languages derived from C, curly brackets in Pascal indicate comments.
	Question 13:// Program: helloWorld#import<Foundation/Foundation.h>int main(void) {
			NSLog(@"Hello, world!\n");
			return0;
	}


	Correct Answer: Objective-C
	Your Answer: Objective-C
	Because Objective-C is a superset of C, some Objective-C code looks almost identical to its older cousin. To tell which is which, watch for library classes and functions that start with "NS." That prefix is a holdover from the NeXTstep OS, which popularized Objective-C.
	Question 14:; Program: helloWorldto helloWorld
			print [Hello, world!]
			end
	Correct Answer: Logo
	Your Answer: Logo
	Logo is an old language with an unusual syntax. A teaching language, it is recognizable by its friendly, readable keywords. The to/end keyword pair, used to define a subroutine, should be a big hint.
	Question 15:      *  Program: helloWorld

				 IDENTIFICATION DIVISION.
				 PROGRAM-ID. helloWorld.
				 PROCEDURE DIVISION.
					 DISPLAY'Hello, world!'.
					 STOPRUN.


	Correct Answer: Cobol
	Your Answer: Fortran
	Once you've seen Cobol code, you can never forget it. The rigorous and unorthodox program structure, the mandatory indentation, and the liberal use of uppercase are all dead giveaways.
	Question 16:* Program: helloWorld

				PROGRAM helloWorld
					PRINT'(A)', 'Hello, world!'
					STOP
				END
	Correct Answer: Fortran
	Your Answer: Basic
	The granddaddy of programming languages, Fortran is the oldest language still in use today. As such, it resembles a lot of later languages, but the primitive syntax and unusual indentation make it readily identifiable.
	Question 17:\ Program: helloWorld: helloWorld( -- )
			." Hello, world!"cr ;
	Correct Answer: Forth
	Your Answer: Forth
	Not only is Forth seldom used today, but its syntax remains unique in the history of programming languages. It can still be found in various embedded systems applications, including the Open Firmware found in some PowerPC, Sparc, and IBM Power systems.
	Question 18:// Program: helloWorldusing System;
	public class helloWorld
	{
			public static void Main()
			{
					Console.WriteLine("Hello, world!");
			}
	}


	Correct Answer: C#
	Your Answer: C#
	Somewhere between C and Java lies C#. It retains much of the syntax of the former while adding many of the modern language features of the latter (and some of its own). If it looks like C but it's too slick to be C++, you just might be looking at .Net code.
	Question 19:# Program: helloWorldfunction helloWorld() {
			echo "Hello, world!\n";
	}


	Correct Answer: PHP
	Your Answer: PHP
	PHP uses the function keyword to begin function definitions like JavaScript, but it uses the hash character for comments and the echo keyword for text output, like a scripting language. If you can remember those things, you'll be able to recognize one of the more popular scripting languages on the Web.
	Question 20:-- Program: helloWorldwith Text_IO;
	use Text_IO;
	procedure helloWorld is
	begin
			Put_Line("Hello, world!");
	end helloWorld;


	Correct Answer: Ada
	Your Answer: Ada





	Ada was designed by the U.S. Department of Defense as a reliable, efficient, and highly maintainable language for embedded systems applications. As such, it uses a strict, verbose syntax that owes a lot to Pascal and its related family of languages.√
wilmoore/RECAP.md

wilmoore commented Jun 1, 2012
