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Infallible Code (lemmy.ml)

submitted 1 day ago by sirico@feddit.uk to c/programmerhumor@lemmy.ml

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[–] dsilverz@calckey.world 2 points 20 hours ago (1 children)

@sirico@feddit.uk

private bool isEven(int number){
    	bool result = true;
    	while (number > 0){
    		number = number - 1;
    		if (result == true)
    			result = false;
    		else
    			result = true;
    	}
    	return result;
    }

(P.S.: Only works for positive numbers)

[–] jaupsinluggies@feddit.uk 3 points 18 hours ago

This works for both positive and negative numbers:

private static bool isEven(int number)
{
	bool result = true;

	while (number < 0)
	{
		number = number - 1;
		if (result == true)
			result = false;
		else
			result = true;
	}
	while (number > 0)
	{
		number = number - 1;
		if (result == true)
			result = false;
		else
			result = true;
	}
	return result;
}

Output:

isEven(4) = True
isEven(5) = False
isEven(-4) = True
isEven(-5) = False