abstract data type

[abc1]

what is abstract data type?
what is the difference between abstract data type and normal data type?

Anyone please explain with example

[AoZplusplus]

abt is data structure + algorithm + interface(API).
Not sure of the normal data type.

[abc1]

stack is considered as abstract data type.why?

[ModShop]

Your homework is your job. Why?

[Peter87]

I'm not too good at this but it has something to do with that stack is just a description on what operations it should support. With a stack you can push and pop. A stack can be implemented in many different ways. A linked list can be used. A linked list is not an abstract data type.