ROS beginner tutorials:Writing Simple Service and Client (C++) - need explanation [closed]
I'm following the ROS beginner tutorials and currently doing 14.Writing Simple Service and Client (C++) (http://www.ros.org/wiki/ROS/Tutorials/WritingServiceClient%28c%2B%2B%29)
In Section 1.2 Writing the Client Node, the following lines of code have not been explained:
8 if (argc != 3)
9 {
10 ROS_INFO("usage: add_two_ints_client X Y");
11 return 1;
12 }
Can anyone tell me why this comparison is made? Thanks in advance.
P.S.I'm using ROS groovy on Ubuntu 12.10. Following catkin tutorials.
Closed for the following reason
the question is answered, right answer was accepted by
Arkapravo
close date 2014-06-28 14:31:52.407421
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