Getting compiler to work in Notepad++ - c++

Question

I'm having some trouble using Notepad++ to compile code. I've installed notepad++ (and NppExec), downloaded MinGW from this source (http://nuwen.net/mingw.html) and installed it to "C:\MinGW\".
Then I tried to set notepad++ to use g++ to compile c++. Per advice, I entered the following into NppExec's console:
NPP_SAVE
CD $(CURRENT_DIRECTORY)
C:\MinGW\bin\g++.exe -g "$(FILE_NAME)"
Saved it as C++ Compiler, and added it to the "Macros" section of the toolbar.
Then I tried to run a simple test program:
#include <iostream>
int main()
{
cout << "Hello, world!";
}
After that a couple of weird errors popped up. First it wanted me to save to System32 by default, which I don't remember it doing before (it won't let me, forcing me to save in Documents).
I let it save to documents, than tried to run it with the compiler. It gives me this error, which I don't recognize at all:
NPP_EXEC: "C++ Compiler"
NPP_SAVE: C:\Users\Bova\Documents\Test.cpp
CD: C:\Users\Bova\Documents
Current directory: C:\Users\Bova\Documents
C:\MinGW\bin\g++.exe -g "Test.cpp"
Process started >>>
Test.cpp: In function 'int main()':
Test.cpp:5:5: error: 'cout' was not declared in this scope
cout << "Hello, world!";
^
Test.cpp:5:5: note: suggested alternative:
In file included from Test.cpp:1:0:
c:\mingw\include\c++\4.8.2\iostream:61:18: note: 'std::cout'
extern ostream cout; /// Linked to standard output
^
<<< Process finished. (Exit code 1)
Please help.

Answer 1

There is nothing wrong with your compiler. You are not using the correct namespace to use cout
#include <iostream>
int main()
{
std::cout << "Hello, world!";
}
Or
#include <iostream>
using namespace std;
int main()
{
cout << "Hello, world!";
}