Connect to the queue manager using the MQCONN call. If this
call fails, print the completion and reason codes and stop processing.
Note:
If you are running the sample in a CICS(R) environment, you do not need to issue
an MQCONN call; if you do, it returns DEF_HCONN. You can use the connection
handle MQHC_DEF_HCONN for the MQI calls that follow.