Question: 1. Namespaces and using Directives] If we didn't write using namespace std; after #include , to write this line of code: cout < < Hello

1. Namespaces and using Directives]

If we didn't write using namespace std; after #include , to write this line of code:

cout << "Hello World" << endl;

We would instead have to write:

std::cout << "Hello World" << std::endl;

What does using namespace std; actually do, and what is contained in the std namespace?

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