From my own experiences writing either language I have to disagree. C++ may be much (much much) more featureful than C, but if you skip constructs and behavior

From my own experiences writing either language I have to disagree. C++ may be much (much much) more featureful than C, but if you skip constructs and behavior that aren't strictly a subset of the two you are still missing a lot of modern C, and it's exaggerated by C11. That's not just the obvious high level features like compound literals, designated initializers, VLAs, or anonymous structures/unions. There are a lot of creeping nits about what is defined and undefined in either language, a famous(ly misunderstood) example being type-punning via union, which is allowed in C but undefined behavior in C++. Except for a few things C++ has imported from C like stdint and vararg macros the truth of your statement depends strongly on how far you personally tend to stray beyond C89 in either direction.