Get startedGet started for free

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

View Course

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
Edit and Run Code