-module(lab1).
	-export([hello_world/0,fac/1,even/1, odd/1,fib/1,list_stuff/0,polacz/2]).

	
	
	
	
	
	hello_world() -> io:fwrite("hello, world\n").

	

	fac(0) -> 1;
	fac(N) when N > 0 -> N * fac(N-1).
	
	even(X) when X >= 0 -> (X band 1) == 0.
	odd(X) when X > 0 -> not even(X).
	
	fib(0) -> 0;
	fib(1) -> 1;
	fib(N) when N>0 -> fib(N-1) + fib(N-2).
	
	list_stuff()->
		List1 = [1,2,3],
		List2 = [4,5,6],
		
		List3 = List1 ++ List2,
		List3.
		
	polacz(A,B)->
		List4 =A,
		List5 =B,
		List6 = List4 ++ List5,
		List6.