Hello, I am just getting started. Here is my problem - 
I open Code:Blocks
I write:
#include <iostream>
using namespace std;
int main ()
{
    cout << "HEY, you, I'm alive! Oh, and Hello World\n";
    cin.get ();
}
I select, "Build and Run"
I get Build message: "fatal error: iostream: no such file or directory
I clear everything out 
I click on "Open"
I navigate to the sample code and select, "Hello"
The code is identical to what I typed in.
This runs with no problems.
Thank you