 }  
 
 ros::Subscriber<std_msgs::UInt8> steering_subscriber("robot_car_steering", &move_robot);
+ros::Subscriber<std_msgs::Int16> speed_subscriber("robot_car_speed", &set_speed);
 
 std_msgs::Int16 ultrasonic_sensor_message;
 ros::Publisher ultrasonic_sensor_publisher("robot_car_ultrasonic_sensor", &ultrasonic_sensor_message);

int ENA=5;
int ENB=11;
int ABS = 100;

void move_robot(const std_msgs::UInt8& msg)
{ 

  nh.initNode();
  
  nh.subscribe(steering_subscriber);
  nh.subscribe(speed_subscriber);
}

void loop() 
