Problem with using && as shorthand for if

[div0]

On 20/08/2010 20:59, Ersin Er wrote:
> Hi,
>
> The following code compiles and outputs "1 = 1" as expected:
>
> 1 == 1&&  writeln("1 = 1");
>
> However, the following code fails to compile (although it should not):
>
> 1 == 2&&  writeln("1 = 2");
>
> The error is as follows:
>
> Error: integral constant must be scalar type, not void
>
> What I expect that the second code should also compile and output nothing when executed.
>
> Am I missing something?
>
> Thanks.

The return type of writeln is void.
You can't && with void.

You are asking

'is X true AND <something which can't return true or false> is true'

which is clearly nonesense.

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