In this section, we are going to learn how to create two nodes: one to publish data and the other to receive this data. This is the basic way of communicating between two nodes, that is, to handle data and do something with this data.
Navigate to the chapter2_tutorials/src/ folder using the following command:
$ roscd chapter2_tutorials/src/
Create two files with the names example1_a.cpp and example1_b.cpp. The example1_a.cpp file will send the data with the node name, and the example1_b.cpp file will show the data in the shell. Copy the following code inside the example1_a.cpp file or download it from the repository:
#include "ros/ros.h" #include "std_msgs/String.h" #include <sstream> int main(int argc, char **argv) { ros::init(argc, ...
