Abstract Datatype

Question

Which one comes under Abstract Datatype? int string double class

Rajesh Singh · Answer

Hi Monalisa An abstract data type is a theoretical concept (a collection of function signatures and rules) to describe the values that a type can have by defining how these values can be constructed and which constructions create the same values. Objects are not ADTs (*). (So in C# Stringdouble and Int32 are not ADTs.) An Abstract Data Type (ADT) is any type whose internal implementation can change without affecting code that uses it. By internal implementation I mean that the interface (API if you wish) for the ADT remains. In that sense the classic internals-hiding class implements an ADT it would be possible to have a parallel implementation with different internal implementation as long as the API remains unchanged.

Sujeet Suman · Answer

Monalisa class is an Abstract Data Type where as int string double are Primitive Data Type .

Monalisa Priyadarsini · Answer

thanks a lot

Ranjit Powar · Answer

No one is ADT.

Munesh Sharma · Answer

There are two parts to each ADT: The public or external part which consists of: the conceptual picture (the user's view of what the object looks like how the structure is organized) the conceptual operations (what the user can do to the ADT) The private or internal part which consists of: the representation (how the structure is actually stored) the implementation of the operations (the actual code) In general there are many possible operations that could be defined for each ADT; however they often fall into these categories: initialize add data access data remove data

Munesh Sharma · Answer

Class is abstract datatype.. classes uses the concept of data abstraction  known as absract data type . abstract data type is an older term to describe the concepts of stack and queues in terms of their functionality without describing their implementation .