Currently (VS2019 Version 16.11.49) there are a lot of warnings
eg:
idea is to lower/fix marority of these or ideally have 0!
by defining 2 macros at project level
_CRT_SECURE_NO_WARNINGS
_SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING
or maybe its better idea to remove completely deprecated using ? (I agree it was required 5-8 years about but in 2025 it's already migrated to the C++ standard std:: namespace itself..
using namespace std::tr1;