Hi to all,

Thanks for your help. But i'm very curious why there is only output from ROS_INFO and none from ROS_DEBUG although there is no error.

--------------------------------------------Experiment.cpp------------------------------
#include <ros/console.h>

int main(void){

    ROS_DEBUG("Hello %s", "World");
    ROS_DEBUG_STREAM("Hello " << "World");
    ROS_INFO("%s", "World");

return 0;
}
----------------------------------------------------------------------------------------------------

With thanks,
Zhiping