static variables inside a C++ method

Question

As a C programmer, I'd like to ask a question related to C++.

Suppose doSomething(), which has a static local variable, is a public method of a class in C++. And suppose we have created two instances of this class.

Now, is there only one copy of this static variable in memory, shared between the two instances? I guess this should be the case.

Yes, that is the case.

Jeremy Friesner
– Jeremy Friesner

2019-02-26 05:25:00 +00:00
Commented Feb 26, 2019 at 5:25 — Jeremy Friesner
– Jeremy Friesner, Commented Feb 26, 2019 at 5:25

rolevax · Accepted Answer · 2019-02-26 05:39:49Z

1

Is there only one copy of this static variable in memory, shared between the two instances?

Yes

answered Feb 26, 2019 at 5:39

rolevax

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Comments

Eddie C. · Accepted Answer · 2019-02-26 05:59:43Z

The lifetime of the static variable is from the time the program flow encounters the declaration to when the program terminates. It is shared by any instance of the class.

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