sudo apt-get install build-essential cmake

1. brew update && brew upgrade
2. brew install cmake

Go to https://projecteuler.net/about
Click the Register button to get a project Euler account and track your progress solving problems.

clone https://github.com/DensityCo/cplusplus.git
change to the 003-projectEuler directory
View main.cpp to see the source.
cmake .
make
./ProjectEuler