Timer is not a function. It is an object. This should work:
Code:
#include <IterativeRobot.h>
#include <Timer.h>
class Robot: public frc::IterativeRobot {
public:
void RobotInit() {
timer = new frc::Timer();
}
private:
frc::Timer* timer;
};
START_ROBOT_CLASS(Robot)
And a more complete example:
https://github.com/wpilibsuite/Eclip.../src/Robot.cpp