First function
The first function you'll write in C++ may very well be the only function you will ever need as you will write a function that returns the answer to the ultimate question of life, the universe and everything.
Rcpp
is loaded in your workspace.
This exercise is part of the course
Optimizing R Code with Rcpp
Exercise instructions
Write a C++ function the_answer()
that does not take any argument and
always returns the int 42
.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Define the function the_answer()
cppFunction('
___ ___() {
return ___ ;
}
')
# Check the_answer() returns the integer 42
the_answer() == 42L