Answer / akshata

Abstraction of structure independently of type is genericity
(pronounced jen-err-iss-it-ee).

E.g. Compare these two functions to return the maximum of
two numbers.

integer maxInteger (integer param1, integer param2)
{
if (param1 > param2)
{ return param1; }

return param2;
}



float maxFloat (float param1, float param2)
{
if (param1 > param2)
{ return param1; }

return param2;
}

It seems silly to have to write the two functions but if a
language doesn't allow you to pass an integer to a function
that requires a floating point parameter (or vice versa)
then this is exactly what you must do.

Some languages allow you to to write a single generic
function that will serve the same purpose for both integers
and floating point values (or any other types you like for
that matter). In general, such a function might look a
little like this.

TYPE max (TYPE param1, TYPE param2)
{
if (param1 > param2)
{ return param1; }

return param2;
}

If memory is allocated to a class,when object of the class is created then how do we use the abstract class methods.coz v cant create obj of abstract class, only reference is created,when the abstract class data and members got the space in memory??

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