[Boost-users] problem with boost units

Subject: [Boost-users] problem with boost units
From: Robert Ramey (ramey_at_[hidden])
Date: 2015-09-17 01:31:28

the following small example fails to compile and points to error in 
assignment.  For the life of me I can't figure why this should fail. 
Any help appreciated.

Robert Ramey

// include headers to implement output operations for quantities with units
#include <iostream>
#include <boost/units/io.hpp>

#include <boost/units/systems/si/volume.hpp>

int main(){
     boost::units::si::volume fuel_capacity;
     fuel_capacity = 9.0f * boost::units::si::cubic_meters;
------------------^
     std::cout << "   " << fuel_capacity << "\n";
     return 0;
}