Exercise

First function - again

Recall the the_answer() function from Chapter 1, that always returns 42. Let's rewrite it, this time in a C++ file.

The file's components are:

An "#include" directive to get access to Rcpp functionality.
A using namespace declaration, for convenient typing.
The function definition.
An Rcpp R comment block, to call the function once the C++ code is compiled.

Instructions

100 XP

Include the Rcpp.h header file.
Declare that you use the Rcpp namespace.
Make the function return 42.
In the Rcpp R comment block, call the function.

Take Hint (-30 XP)