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C++: enum

C: struct

C++ Explicit Operators

C++ explicit cast operator: static_cast / const_cast / reinterpret_cast / dynamic_cast

C++: auto / register / static / const / volatile / linkage / scope

C: sizeof is an operator

C++: dereference

C++: There are void pointers but no void references

C++: pass-by-value / pass-by-pointer / pass-by-reference

C++: A syntax constraint when defining variables in the statements of if, while and switch