include <iostream> // used as conversion constexpr double operator"" _deg ( double deg ) { return deg*3.141592/180; } int main(){ double x = 90.0_deg; std::cout << x << '\n'; }
Standard input is empty
prog.cpp:1:1: error: 'include' does not name a type include <iostream> ^ prog.cpp: In function 'int main()': prog.cpp:11:16: error: unable to find numeric literal operator 'operator""_deg' double x = 90.0_deg; ^ prog.cpp:12:5: error: 'cout' is not a member of 'std' std::cout << x << '\n'; ^
Standard output is empty