Answer Posted / sandeep kumar l

pop divide the large task in to small tasks and then start
executing the task which is nothing but a function.what the
1st function execute can pass to 2nd one and it can do
it's operation an finally it can complete the task.so here
data is moving freely in all the functions where integrity
of data and uprightness of data is not at all possible.and
it is top to bottom approach.
eg:
consider an organisation knows as bank and they have close
all the accounts by the end of the month.so 1st person can
job is add all the credits and he send the same file to 2nd
person whose job is remove the debts and finally 2nd person
send the same file to 3rd one whose job is to close the
accounts .so,what else the previous person does can make
sense to next one in this data is freely moving through
out the task.
oops is quite opposite bootom to top approach what the 3rd
person do cannot know to 2nd & 1st person similarly what
the 2nd one does cannot know to the 1st one until and
unless he give the permission that respective cannot how
the work is done ;
eg:
10 cars
10 owners
only the owner who has the key can acess his own car .he
cannot do any other car.
similary making all of them together in to a single unit
and keeping the information hiding untill and unless u give
the permission other one won't access it.it can be possible
in oop by using acess specifiers knows as pulic and
private .in stead of function we use say object which has
state and behaviour (method)
exception handling can be done in oop which cannot be
stopped in pop.
security and reusabilityof code is done in oop through
method overloading and method overriding.which is not
possible in pop

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