Category: General

25 Jul 2015 05:13

Joined:	15/07/2015
Level:	Bronze
Points:	22

Points:	5

Questions on oop's concept

Hi

Kindly let me know the answers for the questions that i have faced in my interview.

1)In a program i have two methods, one is absract method and the other one is interface method. Now i will interhit both absract method and interface method into a class. Out these two methods which one will be executed first and why.

Note: sorry, i don't excatly remember the question that he has asked whether we inherit those
method's into a class or another method.

Method1: abstract
{
int a
}

Method2: interface
{
int a
}

class : abstract, interface Note:which of these method will be called or executed first
{ in the class and why.

}

2)In a program two variables will be assigned with the values a=10 and b=5.In output we should get a=5 and b=10. How can we get it.

kindly tell me the answers for above questions and also tell me some such type of questions,that we would face in the interview.and help me to prepare for the interview.

Thanks,

#760948

25 Jul 2015 17:21

Joined:	12/02/2013
Level:	Gold
Points:	3098

Points:	4

Hi Rohini.

Your first question is not clear.
Remember the question and provide exact requirement.

For 2nd question, you need to swap the numbers like below.


using System ;
using System.Collections.Generic ;
using System.Linq ;
using System.Text ;
namespace Program
{
class Program
{
static void Main ( string [] args )
{
int a, b, temp ;
a= 5;
b=10;
temp = a;
a= b;
b= temp ;
Console .Write ( " \nAfter Swapping : " );
Console .Write ( " \na:" +a );
Console .Write ( " \nb :" +b );
Console .Read ();
}
}
}
Here is the output:
After Swapping :
a: 10
b: 5

Regards

Sridhar Thota.
"Poverty means Poverty of knowledge"

Sridhar Thota.
Editor: DNS Forum.

#760965

26 Jul 2015 23:01

Joined:	06/04/2012
Level:	Gold
Points:	4230

Points:	4

Hello Rohini,

Tell us your first question properly for exact answer from us.

2nd question's answer :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int a = 10, b = 5, temp;

Console.WriteLine("Before swapping :");
Console.WriteLine("a = " + a);
Console.WriteLine("b = " + b);

temp = a;
a = b;
b = temp;

Console.WriteLine("\nAfter swapping : ");
Console.WriteLine("a = " + a);
Console.WriteLine("b = " + b);

Console.WriteLine("\nPress any key to exit...");

Console.ReadLine();
}
}
}

Hope this will help you.

Regards,
Nirav Lalan
DNS Gold Member
"If you can dream it, you can do it."

#760967

26 Jul 2015 23:05

Joined:	21/07/2015
Level:	Silver
Points:	140

Points:	2

for swapping there are few more options. you can check following link
http://www.programmingsimplified.com/c-program-swap-two-numbers

usualy the question will be swaping two numbers without thrird vaiable

Do Good... Enjoy your life.....

#761192

03 Aug 2015 08:11

Joined:	12/02/2013
Level:	Gold
Points:	3098

Points:	4

Hi

Abstract class:
*Abstract class can contain both abstract
methods and non abstract methods.
*If a class contains at least one abstract method
then that class must be declared as abstract
class.
*Abstract class can inherit from another abstract
class and can inherit from more than one
interface.
*Abstract methods must be implemented in
derived class.
*Object cannot be created for abstract classes,
reference can be created.
public abstract class myabstract: IA, IB //IA
and IB are two interfaces
{
public abstract viod m1(); //abstract method
public void m2() //non abstract method
{
//some logic
}
}

Interface:
*Interface contain only abstract methods, which
are public abstract by default.
*Interface can implement another interface but
cannot implement abstract class.
*Object cannot be created for interface, reference
can be created.
public interface ISample:IMysample
{
void mymethod();
void mymethod2();
}

Regards

Thota Sridhar.
If you learn from defeat..
You haven't really lost..

Sridhar Thota.
Editor: DNS Forum.

Questions on oop's concept

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