#include <string>
 
const std::string &sensor_name()
{
    static std::string name;
    return name;
}
 
const std::string &sensor_order()
{
    static std::string order;
    return order;
}
 
const std::string &sensor_status()
{
    static std::string status;
    return status;
}
 
 
int main(int argc, char * argv[])
{
    const std::string &status = !sensor_name().empty()? sensor_name() + ".S":
                                                             sensor_status();
    const std::string &order  = !sensor_name().empty()? sensor_name() + ".O":
                                                              sensor_order();
    return 0;
}

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