I have written the following program on Arduino for connecting to the Mosquitto broker. I have followed all the modifications suggested in the tracebacks on "Knolleary's" blog. As such, the code bears its resemblance form the book "IBM RebBook on MQTT" with a slight modifications. The attached link displays the program along with the error which I get upon compilation. Need suggestions as to how I can rectify this mistake.
Thanking you in anticipation of your kind and earliest response in this regard.