Re: on allowing "int a" definition everywhere

Ben Bacarisse <ben@bsb.me.uk> writes:

Keith Thompson <Keith.S.Thompson+u@gmail.com> writes:
>

Tim Rentsch <tr.17687@z991.linuxsc.com> writes:
[...]
>

Not exactly.  There are things that can be done inside a
statement-expression that are not available inside nested
functions or lambdas.

>
And you're not going to tell us what those things are.

>
Apparently not.
>
But one thing occurs to me... you can break (or jump) out of a statement
expression:
>
  for (int i = 0; i < 10; i++)
      printf("%d\n", ({ if (i > 5) break;  i; }));
>
You can't do this with a lambda or nested function.

Right.  More generally, control transfers to outside the scope of
a statement-expression are allowed.  That includes break, continue,
goto, and importantly return, which returns from the function
containing the statement-expression.