Namespace in C++ Programming

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Namespace in C++ Programming

Namespace is a new concept introduced by the ANSI C++ standards committee. This defines a scope for the identifiers that are used in a program. For using the identifiers defined in the namespace scope we must include the using directive, like
using namespace std;

Here, std is the namespace where ANSI C++ standard class libraries are defined. All ANSI C++ programs must include directive. This will bring all the identifiers defined in std to the current global scope. using and namespace are the new keywords of C++.


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