[drabiega]

> The index is currently limited to 22 languages. You can still analyze the popularity of your favorite language and compare it to others, using Google Trends. C++ has the same popularity as C on Google trends: to avoid duplication, it is not included in the PYPL index.

[satish-setty]

Hence, to avoid confusion, the table should be updated as "C and C++" (or worse, "C/C++").

That said, any index which conflates C and C++ cannot be taken seriously.