What is the use and important of including... "Namespace std" c++

Answer 1

That includes stuff like cout, cin, string, vector, map, etc.

forexample:

cout << “Hello Yakubu Isaac.” << endl;

// Here it is necessary to put ‘using namespace std’ on the top of code.

std::cout << " Hello Yakubu Isaac” << std::endl;

// Here there is no need to put ‘using namespace std’ on the top of code.

Answer 2

Thanks