[Discuss-gnuradio] Compilation Error of the sample code "tags_demo.cc"

[Zhihong Luo]

Hi all,

I just started to learn to use c++ for gnuradio, and I copied some codes from the "tags_demo.cc". But compilation error occurred as shown in the following screen shots. Can you tell me where I made a mistake?

Thanks,

Zhihong Luo