2.5.2节练习
2.35
#include<iostream> #include"Sales_item.h" int main() { const int i = 42; auto j = i; const auto& k = i; auto* p = &i; const auto j2 = i, & k2 = i; std::cout << typeid(i).name() << std::endl; std::cout << typeid(j).name() << std::endl; std::cout << typeid(k).name() << std::endl; std::cout << typeid(p).name() << std::endl; std::cout << typeid(j2).name() << std::endl; std::cout << typeid(k2).name() << std::endl; }