" std::cout<<"------------"; " and also for cin " std::cin>>x; ". Why they accessed cout and cin like this way and what is this? Kindly explain in detail with detail of real reason.

hrough namespaces we can group different entities like classes, object and functions under a single name. as a result the global scope is divided in sub scopes, each one with its own name.


namespace identifier{



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Std is a namespace, all the files that are in the standard library of C++ is declared under std namespace. That is why we have generally included the using namespace std; statement in all programs that used any entity defined in iostream.