Multiple publishers and subscribers in a class

edit

I am trying to build single c++ file which contains a class that handles both subscribers and publishers. I want to publish multiple instance of a msg (representing different sensors) using the same class.
I wanted to know if such a system is possible on roscpp

#include <ros/ros.h>
class SubscribeAndPublish
{
 public:
SubscribeAndPublish()
{
//Topic you want to publish
pub_ = n_.advertise<ros_work::sensor>("sensors", 1000);
input();
ros::Rate loop_rate(10);
while(ros::ok())
{
pub_.publish(msg); //publishes the msg
ros::spinOnce(); //done to handle callbacks
loop_rate.sleep(); //sleep till the time is done --10
}
}
void input()
{
  int id,t;
  long int mem;
  ROS_INFO("Enter the ID: ");
  scanf("%d", &id);
  ROS_INFO("Enter the memory: ");
  scanf("%ld", &mem);
  msg.id = id;
  msg.memory = mem;
  msg.name = "test";
msg.state = true;
}

private:
ros::NodeHandle n_; 
ros::Publisher pub_;
ros_work::sensor msg;
//ros::Subscriber sub_;

};//End of class SubscribeAndPublish

int main(int argc, char **argv)
{
 //Initiate ROS
 ros::init(argc, argv, "sensors_class");

 //Create an object of class SubscribeAndPublish that will take care of everything
 SubscribeAndPublish SAPObject[4];
 ros::spin();

 return 0;
 }