Re: [Boost-users] more Boost::Units questions

Only the last line fails? The only line of that which should compile is the #include.

conversion_factor return the conversion between two different units. kilometer in your example is not a unit.

#include

double mile_to_km = conversion_factor(mile(), si::kilo*si::meter);

#include <iostream> #include #include #include #include #include #include #include int main() { using namespace boost; using namespace boost::units; using namespace boost::units::si; typedef meter_base_unit ::unit_type meter_type; typedef scaled_base_unit >

::unit_type kilometer_type; typedef us ::mile_base_unit ::unit_type mile_type;

const kilometer_type kilometer; const mile_type mile; double miles_to_kilometers = conversion_factor(mile,kilometer); double kilometers_to_miles = conversion_factor(kilometer,mile); std::cout << "1 " << mile << " = " << miles_to_kilometers << " " << kilo*meters << std::endl; std::cout << "1 " << kilometer << " = " << kilometers_to_miles << " " << mile << std::endl; quantitysi::length q1(1.0*mile); quantitysi::length q2(1.0*kilo*mile); quantity q3(1.0*mile); quantity q4(1.0*kilo*mile); quantity q5(1.0*kilometer); quantity q6(1.0*kilo*meter); std::cout << q1 << std::endl << q2 << std::endl << q3 << std::endl << q4 << std::endl << q5 << std::endl << q6 << std::endl; return 0; }