public static bool isodd(int i)
{
return ((i & 1) == 1);
}

can someone explain me how this is working

An integer is a basic type having a number of binary bits.

Depending on your processer architecture this might be 32 or 64 bits.

The binary and (&) operator performs a bitwise "AND" operation on the
integer which effectively removes all but the least significant bit of the
integer. This may be 1 or 0 depending on the value.

In the case that it is indeed 1, the number is odd.

Hope this was easily understood.

--
Bob Powell [MVP]
Visual C#, System.Drawing

Ramuseco Limited .NET consulting
http://www.ramuseco.com

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"joso" <(E-Mail Removed)> wrote in message
news:g410fi$jac$(E-Mail Removed)...
> public static bool isodd(int i)
> {
> return ((i & 1) == 1);
> }
>
> can someone explain me how this is working

Bob Powell [MVP] wrote:
> An integer is a basic type having a number of binary bits.
>
> Depending on your processer architecture this might be 32 or 64 bits.

In C# an int is always 32 bit.

Arne

"Arne Vajhøj" <(E-Mail Removed)> wrote in message
news:486436bf$0$90270$(E-Mail Removed)...
> Bob Powell [MVP] wrote:
>> An integer is a basic type having a number of binary bits.
>>
>> Depending on your processer architecture this might be 32 or 64 bits.
>
> In C# an int is always 32 bit.
>
> Arne
He didn't write 'int' but 'integer'. An integer is a mathematical concept,
an int in C# is an alias for a System.Int32 which is an integer represented
in the architecture as 32 bits as opposed to an Int64.

--

Joe Fawcett (MVP - XML)
http://joe.fawcett.name

Joe Fawcett wrote:
> "Arne Vajhøj" <(E-Mail Removed)> wrote in message
> news:486436bf$0$90270$(E-Mail Removed)...
>> Bob Powell [MVP] wrote:
>>> An integer is a basic type having a number of binary bits.
>>>
>>> Depending on your processer architecture this might be 32 or 64 bits.
>>
>> In C# an int is always 32 bit.
> He didn't write 'int' but 'integer'. An integer is a mathematical
> concept, an int in C# is an alias for a System.Int32 which is an integer
> represented in the architecture as 32 bits as opposed to an Int64.

How do you think that he think about integer as a mathematical type
when he write "An integer is a basic type having a number of binary
bits" ?

Besides it would be even worse if it were the case. Believing that
a mathematical concept depends on processor architecture to be
either 32 or 64 bit.

Arne