a header file for generate random number
the input of simulation arguments respectively seperated by blank
- number of customer required
- mean interarrival time of customer
- mean service time
the output of simulation assume that the time unit is minute
- Avg delay in queue How long does the customer need to wait in the queue
- Avg number in queue How many customer wating in queue at the average
- Server utilization How much the server had been used
。[Theo] Theoretical value 。[Expe] Experimental value