//components (globals)
NXTMotor  mleft = NXTMotor(9, 6, 3);   //has encoder!
NXTMotor  mright = NXTMotor(10, 11, 0); //no encoder!
TwoNXTMotors  m = TwoNXTMotors(&ml, &mr);
EpsonGyro gyro = EpsonGyro();
LED l = LED(13);
谢谢帮看一下哪里出错了?