what does

using namespace std;

actually mean? ...

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What does your book say? Did you search google? Have you made any attempt to answer this trivial question on your own?

In the simplest possible way, it means:

Dear mister compiler,
In this place (or scope), I would like to be using this namespace that they call std . This would really help me because I won't have to qualify everything with std:: in the remainder of this scope.
Thank you.

And then, the compiler will do it. But, beware of the dangers of name-clashes if you abuse this feature.

Member Avatar for HASHMI007

Agreed with Mike

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