A versioned accessor is exported by the library.

S_API ISteamParentalSettings *SteamAPI_SteamParentalSettings_v001();

Inline, unversioned accessor to get the current version. Essentially the same as SteamParentalSettings(), but using this ensures that you are using a matching library.

inline ISteamParentalSettings *SteamAPI_SteamParentalSettings() { return SteamAPI_SteamParentalSettings_v001(); }