what is abstract class ?
when is used in real time ?
give a exp
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Answer / mms zubeir
First of all, a class is a software entity to represent a
concept. If the entity exists in real world, then, we can
create object of the class which makes sense. This is
called as a concrete class.
For example, Lion, Dog, Car, Employee, etc.
An abstract class is a class which represents a concept,
the object of which is not available in the real world.
This is merely a concept alone. There are object in the
real world which resembles this concept.
For example, Animal, Vehicle, Person, etc.
| Is This Answer Correct ? | 26 Yes | 8 No |
An Abstract Class is one in which the member function(s) at
the Base(Parent) Class are left undefined, but declared.
It's upto the Derived(child(ren)) Classes to Implement the
Functions declared in Base...
Ex:
Let us assume... As a father(Base Class), he has some Land
(Member Function), and he has not done any cultivation
(implementation) in it... As his Child(Derived Class), he
takes the Land(Member Function) from the Father(Base) and
does Agriculture(implementing the M.F. of Parent Class) in
the Child...
Concept of Inheritance...
Is it good enough!!!
| Is This Answer Correct ? | 30 Yes | 18 No |
Answer / ramakrishna yechuri
An Abstract class ia class which consists at least one
abstract method(in complete method).
Advantage is the user can implement the method body as per
his require ment.
ex: connect(){} ,I implement to conncect to oracle
database,u implement to conncet to sybase,my friend
implement this method to connect to oracle db. same connect
method acting in different forms (polymorphisim).
Note: Always Interfaces is better than Abstract class,becoz
Programming to Interface is better than programming to
classes.
To avoid dependency Injection problems.(spring).
| Is This Answer Correct ? | 14 Yes | 4 No |
Answer / m arunachalam
Abstract Class is to hide the internal details of data....
And real time examples are car. Because if u can start the
car, but how to be start didn't know.. where as here
function of start should be hide to the user.......
| Is This Answer Correct ? | 5 Yes | 4 No |
Answer / pradeep
An Abstract Class is one in which the member function(s) at
the Base(Parent) Class are left undefined, but declared.
It's upto the Derived(child(ren)) Classes to Implement the
Functions declared in Base...
The most real time example of abstract class and interface
is bulding a house
1)concrete methods are explained with completed house.
2)abstract classes are explained with completed house but a
little bit of work left
3)interfaces are explained with taking a building plan
| Is This Answer Correct ? | 7 Yes | 7 No |
why destructor is not over loaded?
What is a template?
Write a program to compute for numeric grades for a course. The course records are in a file that will serve as the input file. The input file is in exactly the following format: Each line contains a student's first name, then one space, then ten quiz scores all on one line. The quiz scores are in whole number and are separated by one space. Your program will take it input from this file and sends it output to a second file. The data in the output file will be exactly the same as the data in the input file except that there will be one additional number (of type double) at the end of each line. This number will be the average of the student's ten quiz scores. Use at least one function that has file streams as all or some of its arguments.
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STL 
