D Static Array

[Salih Dincer]

I wonder why the above code is allowed in D?  Is there a special 
reason for this?

```d
import std.stdio : writeln;

void main()
{
     int[0] arr = 40; // ?
     
     typeid(arr).writeln(": ", arr); // int[0]: []
}
```
When we look at the C side, the situation is deplorable! But I 
can claim that there is only one element allowed there.  I found 
the following comment of unknown origin:

> In C99 and later C standards, an array size can be defined as 0 
> and it can include a feature called flexible array member (FAM) 
> which is an array member without specifying its size, it means 
> the size of array will be determined at runtime. However, FAM 
> can only be used in struct and union types and must be the last 
> member of the struct/union.

I tried more than claimed:

```c
#include <stdio.h>

int main() {
     int arr[0];
         arr[0] = 40;
         arr[1] = 41;
         arr[2] = 42;

     for (int i = 0; i < 3; i++)
     {
         printf("%d ", arr[i]);
     }
     return 0; // "40 880975872 787869145"
}
```

And yeah, going out of range is not allowed on D, getting this 
error:

> array index 0 is out of bounds

One more question: Since 0 element initialize is allowed in D, so 
where did 40 go? I can see that number 40 in C!

Thanks...

SDB at 79