alot of questions (1 Viewer)

[1234567]

what's the big difference between function and procedure?

whats het difference between stepwise refinement and top down design?

 

[Dan_the_man]

1) Function takes an input and returns an output
Procedures only have inputs and another variable needs to be declared to give an output.... something like that anyway

2) I forget

 

[SamD]

Stepwise refinement and top down design are pretty similar. My interpretation is that by using stepwise refinement you will end up with a top down design.

 

[Steveo]

stepwise refinement IS top down design isn't it?

they both break the problem down into modules and solve it using the structured (or waterfall) approach

 

[SamD]

Stepwise refinement and top-down design as you say are very similiar.

However it is NOT true that they are only used in the structured or waterfall SW dev approach.

 

[iptteacherssuck]

u can also use bottom up...and its also stepwise refinement

 

[iptteacherssuck]

sam can u give us some tips for tomorrow exam ?

 

[chanfky]

can someone tell me what's the difference between encapsulation & abstraction??

 

[iptteacherssuck]

encapsulation is a concept of putting related methods and properties in to a class. Its process are hidden from the users or developers.

abstraction actually hides some of the methods and properties used in a class. It is a way to present a class in a simpler and generic way. this is very tightly related to inheritance and polymorphism.

u can normally abstract a class by polymorphing it into its parent class. lol this might get u confused