[ros-dev] Uninitialized static variable in function

[Javier Agustìn Fernàndez Arroyo]

O_O
why?

On Sun, Mar 20, 2011 at 11:21 AM, Ged Murphy <gedmurphy at gmail.com> wrote:

> You'll learn in due course that college lecturers are often wrong.
>
>
> 2011/3/20 Javier Agustìn Fernàndez Arroyo <elhoir at gmail.com>:
> > teachers at college told us it is a must to initialize variables.....
> >
> > On Sun, Mar 20, 2011 at 10:53 AM, Dmitry Gorbachev <
> d.g.gorbachev at gmail.com>
> > wrote:
> >>
> >> Hi,
> >>
> >> > please, initialize "i" to 0. Non-initialized variable store garbage,
> >> > not zeroes.
> >>
> >> It probably does not look very well, but otherwise correct:
> >>
> >> > If an object that has static storage duration is not initialized
> >> > explicitly, then:
> >> > — if it has pointer type, it is initialized to a null pointer;
> >> > — if it has arithmetic type, it is initialized to (positive or
> unsigned)
> >> > zero;
> >> > — if it is an aggregate, every member is initialized (recursively)
> >> > according to these rules;
> >> > — if it is a union, the first named member is initialized
> (recursively)
> >> > according to these rules.
> >>
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> >
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>
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