c++ - Why can the new operator be with an initial value? -


as know new operator can used in following way: int *a = new int(10); , means there int pointer named points initial value equals 10. in http://www.cplusplus.com , couldn't find such direction , want know why new operator can used initial value? similar constructor calling?

why new operator can used initial value?

the initial value (10) goes object (int) *a points.

is similar constructor calling?

yes.

also works auto vars

 int  b (20);

b initialized 20.


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