How to install g++ 7 in Ubuntu

https://gist.github.com/beci/2a2091f282042ed20cda#gistcomment-2199017

sudo apt-get update sudo apt-get install gcc-7 g++-7

ln -s /usr/bin/g++-7 /usr/bin/g++

ln -s /usr/bin/gcc-7 /usr/bin/gcc