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-# The fibonacci.pl.c Polyglot
-
-> Written by Paul Buetow 2014-03-24
-
-In computing, a polyglot is a computer program or script written in a valid form of multiple programming languages, which performs the same operations or output independent of the programming language used to compile or interpret it
-
-[https://en.wikipedia.org/wiki/Polyglot_(computing)](https://en.wikipedia.org/wiki/Polyglot_(computing))  
-
-## The Fibonacci numbers
-
-For fun, I programmed my own Polyglot, which is both, valid Perl and C code. The interesting part about C is, that $ is a valid character to start variable names with:
-
-```
-#include <stdio.h>
-
-#define $arg function_argument
-#define my int
-#define sub int
-#define BEGIN int main(void)
-
-my $arg;
-
-sub hello() {
-	printf("Hello, welcome to Perl-C!\n");
-	printf("This program is both, valid C and Perl code!\n");
-	printf("It calculates all fibonacci numbers from 0 to 9!\n\n");
-	return 0;
-}
-
-sub fibonacci() {
-	my $n = $arg;
-
-	if ($n < 2) {
-		return $n;
-	}
-
-	$arg = $n - 1;
-	my $fib1 = fibonacci();
-	$arg = $n - 2;
-	my $fib2 = fibonacci();
-
-	return $fib1 + $fib2;
-}
-
-BEGIN {
-	hello();
-	my $i = 0;
-
-	for ($i = 0; $i <= 10; ++$i) {
-		$arg = $i;
-		printf("fib(%d) = %d\n", $i, fibonacci());
-	}
-
-	return 0;
-}
-```
-
-You can find the whole source code at GitHub:
-
-[https://github.com/snonux/perl-c-fibonacci](https://github.com/snonux/perl-c-fibonacci)  
-
-### Let's run it with Perl:
-
-```
-❯ perl fibonacci.pl.c
-Hello, welcome to Perl-C!
-This program is both, valid C and Perl code!
-It calculates all fibonacci numbers from 0 to 9!
-
-fib(0) = 0
-fib(1) = 1
-fib(2) = 1
-fib(3) = 2
-fib(4) = 3
-fib(5) = 5
-fib(6) = 8
-fib(7) = 13
-fib(8) = 21
-fib(9) = 34
-fib(10) = 55
-```
-
-
-### Let's compile it as C and run the binary:
-
-```
-❯ gcc fibonacci.pl.c -o fibonacci
-❯ ./fibonacci
-Hello, welcome to Perl-C!
-This program is both, valid C and Perl code!
-It calculates all fibonacci numbers from 0 to 9!
-
-fib(0) = 0
-fib(1) = 1
-fib(2) = 1
-fib(3) = 2
-fib(4) = 3
-fib(5) = 5
-fib(6) = 8
-fib(7) = 13
-fib(8) = 21
-fib(9) = 34
-fib(10) = 55
-```
-
-It's really fun to play with :-).
-
-E-Mail me your thoughts at comments@mx.buetow.org!
-
-[Go back to the main site](../)