The issue is for small project you don't really require C++ over C. Because supposedly the price you pay for abstractions has better returns the larger the appl

The issue is for small project you don't really require C++ over C. Because supposedly the price you pay for abstractions has better returns the larger the application is (and that is generally true). My largest C project was 60k lines of code. The code was very, very dense. It had a lot of functionality that had to be packed to as little code as possible (due to memory limitation). It had things like transactional log-based database working in very small, static amount of memory, point in time recovery (so if the application failed it could restore itself to a number of possible checkpoints before the failure), parsers for various protocols (BER-TLV, for example), a lot of cryptography and custom cryptographic protocols, a GUI framework for a small monochromatic screen and keypad, drivers for a bunch of devices (thermal printer, external pinpad, etc.), SSL, a lot of business logic, state machines for talking to a network host, etc.