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C and C++ have many differences, and not all valid C code is valid C++ code.
(By "valid" I mean standard code with defined behavior, i.e. not implementation-specific/undefined/etc.)
Is there any scenario in which a piece of code valid in both C and C++ would produce different behavior when compiled with a standard compiler in each language?
To make it a reasonable/useful comparison (I'm trying to learn something practically useful, not to try to find obvious loopholes in the question), let's assume:
- Nothing preprocessor-related (which means no hacks with
#ifdef __cplusplus, pragmas, etc.) - Anything implementation-defined is the same in both languages (e.g. numeric limits, etc.)
- We're comparing reasonably recent versions of each standard (e.g. say, C++98 and C90 or later)
If the versions matter, then please mention which versions of each produce different behavior.