If a job will get actually complex, this methodology of routing execution to the suitable part of the duty each time it is known as could get a bit furry if you really wanted to keep away from all pointless delays. I often use a CASE statement (referred to as "Select CASE" in Basic and "change" in C, but I named lots of my structure macros after Forth buildings) to steer the execution to the right a part of the routine depending on the state.