easier to use addPatient method & print number
get output
$ java HospitalManager
There are 3 patients:
 Patient "John" is 33 years and suffers from "Tuberculosis"
 Patient "Mary" is 66 years and suffers from "Meningitis"
 Patient "Harry" is 23 years and suffers from "Ebola"
add 10 patients.
Program output:
$ java HospitalManager
There are 10 patients:
 Patient "John" is 33 years and suffers from "Tuberculosis"
 Patient "Mary" is 66 years and suffers from "Meningitis"
 Patient "Harry" is 23 years and suffers from "Ebola"
 Patient "Henry" is 7 years and suffers from "Measles"
 Patient "Lucy" is 17 years and suffers from "Acne"
 Patient "Larry" is 41 years and suffers from "HIV"
 Patient "Henry" is 47 years and suffers from "Broken leg"
 Patient "Kate" is 77 years and suffers from "Dementia"
 Patient "Elizabeth" is 103 years and suffers from "Bone loss"
 Patient "Nigel" is 20 years and suffers from "Diabetes"