All it'd take is a single drill hole and re-wiring the sensor, but it near the top of the window and no one's even gonna notice it's there. Like mneary said if you have eaves it's even more perfect you can recess it up, completely out of site.
Where C# is just different from C++. value types and reference types exist (struct is value-type, class is reference-type) value types live on the stack, reference types on the heap; references can point to null (must not be valid) code is packaged in assemblies in C#; no automatic conversion from int to bool in C#; main-function is called Main in C#
C++ on the other hand took things a step further, added object-oriented features like classes to the language, along with virtual functions and templates. C++ is another of the world's most popular programming languages, and is still in wide use today in everything from video games to productivity software. C++ is a bit more difficult to pick up than C, although many people would argue that there's no reason to start with C anymore at all.