I've downloaded http://www.ishani.org/clang/clang3.3_march2013.7z from http://www.ishani.org/web/articles/code/clang-win32/
now,
#include <iostream>
int main()
{
cout << "Hallo";
}
produces
C:\clang>clang main.cpp main.cpp:1:10: fatal error: 'iostream' file not found #include ^ 1 error generated.
How do I get the stdlib?