C++ cout gives undeclared identifier

Question

So, I have this question. Why does cout throws

error C2065: \'cout\' : undeclared identifier

I am using Visual Studio 2012 as an IDE and I

Answer 1

First of all:

#include 

instead of #include "iostream"

Secondly, it is generally considered bad practice to write using namespace std;, even though most courses start with that. It is better to only use what you actually need, in your case:

using std::cout;