However using C in the case of the original poster does not matter much as the application is game-related not subject to untrusted input.
It is pity there is no alternative "standard library" with safer data struct and operations.
There are some attempts, for example, relatively wildly known klib: https://github.com/attractivechaos/klib
C++ on the other hand has good expressivity that can better deal with complexity of programs (eg. just simply having string, vector, etc) at the expense of some added language complexity. But unfortunately most of that is due to backward compatibility.
My opinion is that program complexity is inherent for anything interesting, so the C++ tradeoff is worthwhile. Also, by sticking to a good subset of C++, one can minimize the “bad” complexity of the language, imho.
I don't know about that... C++ (both the language and the library) is orders of magnitude more complex, and the opportunities to make mistakes have grown almost proportionally. (Two characteristic examples recently discussed here on HN: auto references and iterator invalidation.)