Answer / a.srinivas rao

An abstract class is a class which contains atleast one
abstract method(i.e., an abstract method is one which has
only definition not implementation,which is done in some
other class.
We cannot create an object for Abstract class.
A class is said to be a concrete class if and only if it
contains fully defined methods.Defined methods are also
known has "concrete methods " or "Implemented methods".
We can instantiate an object for concrete class.

Answer / zubeir

First of all, we should understand what is the meaning
of 'abstract' in terms of software. It's the same meaning
as in English, that is, the entities (objects) which do not
exist in the real world are abstract entities. For example,
Dog, Cat, Bear, Deer are all animals that exist but animal
is also an entity which is just a concept and there is no
existance.

So we can define an abstract class for 'Animal'. We can
derive any number of real world animal classes from the
abstract class 'Animal' like Tiger, Lion, Donkey, etc.

Obviously, we can understand now why we cannot create
objects for abstract classes. The answer is we must not,
right?
Because the Animal class has no existance in real world. So
we cannot create a real world entity (nothing but an
object). That is the very reason this concept is followed.
The derived classes that we've seen above are concrete
classes since they are real world objects and have definite
properties and operations on them.

Answer / hkouki

An abstract class is the class that define the interface
without the necessity to implement all the member
functions.

The derived class (from base abstract class) that implement
all the missing functions

Answer / siva rama krishna

the abstract method we can't create object,only create from
derived classes only that means which sub class have no
abstract method.then by using that object only call the
methods.

Answer / jijo o r

An Abstract class is cannot be instantiated.means cannot
make object of this class.It has contains one or more
methods ..but it no implement..

interfaces are same as abstract classes only difference is we
an only define method definition and no implementation.

Answer / bansari

An abstract class is the class that define the interface
without the necessity to implement all the member
functions.

The derived class (from base abstract class) that implement
all the missing functions

Here are the questions and paper pattern from a Birlasoft previous placement paper held at Kolkata, West Bengal. There are two sections 1. Technical questions - 20 2. Aptitude questions - 25 Birlasoft Technical Multiple Choice Questions: Largest integer can be written from 8 bits is a. 256 b. 255 c. 8 d. 10 Change a hexadecimal no to octal How many address lines needed to pass 1MB of data. What is the function of the modulus operator in most language. a) Sets a system environmental value to either base 10 ,base 8 or base 16 b) Returns the remainder after dividing one number by another c) Returns the first argument raised to the second argument power d) Prints out the actual code written to standard output rather than executing the code class professor{} class teacher: public virtual professor{}; class researcher: public virtual professor {} class myprofessor :public teacher,public researcher {}; Referring to the sample code above ,if an object of class myprofessor were created ,how many instances of professor will it contain? a) 0 b) 1 c) 2 d) 3 Modern RDBMS s perfom the following the following functionc except _______. a) Force column values in one table to match any of the values in a column of another table b) Automatically replicate data on another server c) Automatically create new indexes based on query history d) Prevent unauthorized users from accessing data at the firls level RDBMS triggers are typically bound to a _________and one or more a) Table,SQL statement types b) SQL statement type,user c) Column,rows d) User, table What relationship is resolved by an intersecting or associative entity ? a) Recursive b) Mandatory one to one c) Many to Many d) One to One Make a copy of file upper in the directory two levels up . a) jump -2 upper b) cp upper ../..(answer) c) cp upper -2/ d) None of the above i = 0; j = 0; for(j=1;j<10;j++) i=i+1; In the (generic) code segment above what will be the value of the variable i at completion ? a) 0 b) 1 c) 3 d) 9 e) 10 Which of the following statements is true when a derivation inherits both a virtual and non-virtual instance of a base class ? a) Each derived class object has base objects only from the non virtual instance b) Each base class object has derived objects only from the non-virtual instance c) Each derived class object has base objects only from the virtual instance d) Each derived class object has a base object from the virtual instance and a base object from non-virtual instance. class Word { public: Word(const char*,int = 0); }; Referring to the sample code above what is the minimum number of arguments required to call the constructor ? a) 0 b) 1 c) 2 d) 3 What is the function of the modulus operator in most languages ? a) Sets a system environmental value to either base 10 ,base 8 or base 16 b) Returns the remainder after dividing one number by another c) Returns the first argument raised to the second argument power d) Prints out the actual code written to standard output rather than executing the code lass professor{} class teacher: public virtual professor{}; class researcher: public virtual professor {} class myprofessor :public teacher,public researcher {}; Referring to the sample code above ,if an object of class ? myprofessor? were created ,how many instances of professor will it contain? a) 0 b) 1 c) 2 d) 3 Modern RDBMS?s perfom the following the following functionc except a) Force column values in one table to match any of the values in a column of another table b) Automatically replicate data on another server c) Automatically create new indexes based on query history d) Prevent unauthorized users from accessing data at the firls level Which is not the characteristics of a view ? a) Consumes Disk space for data b) Multiple tables c) Multiple rows d) Updateable Technical Questions for computer science engineering students placement paper - cse branch tech / technical interview and written test paper questions from sql, rdbms, queries, c language, programming, etc. The questions are multiple choice / objective type. RDBMS triggers are typically bound to a ________and one or more ________ a) Table,SQL statement types b) SQL statement type,user c) Column,rows d) User, tables What relationship is resolved by an ?intersecting? or ? associative? entity ? a) Recursive b) Mandatory one to one c) Many to Many d) One to One Make a copy of file ?upper? in the directory two levels up . a) jump -2 upper b) cp upper ../.. c) cp upper -2/ d) None of the above Birlasoft Aptitude Section Questions: Question like A is engg. B is doctor C is artist etc then few condition related to them you have give answer to 4 or 5 qs on these conditions . same as above with different data and conditions. 3 qs onfinding error in english sentences If father is three times as old as son . 5 years ago he was 4 times age of his son what is son age. Same as above but now daughter and mother joined in and age in question is that of daughter. A figure is given find no of traingles in this figure Same as above but figure is diffrent and find no of squares and triangles. See other latest free online Birlasoft India placement exam test papers here with technical hr interview candidate real experiences from all over india - submitted by college freshers and company campus recruitment drives.

0 Answers   BirlaSoft,

If P is the population on the first day of the year, B is the birth rate, and D is the death rate, the estimated population at the end of the year is given by the formula: The population growth rate is given by the formula: B – D Write a program that prompts the user to enter the starting population, birth and death rates, and n, the number of years. The program should then calculate and print the estimated population after n years. Your program must have at least the following functions: 1. growthRate: This function takes its parameters the birth and death rates, and it returns the population growth rate. 2. estimatedPopulation: This function takes its parameters the current population, population growth rate, and n, the number of years. It returns the estimated population after n years Your program should not accept a negative birth rate, negative death rate, or a population less than 2. please answer my question ....

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