C# Programming Questions and Answers

Showing 1 - 9 of 9 questions

Choose the correct statement among the following?

A property can be a static member whereas an indexer is always an instance member

A get accessor of a property corresponds to a method with no parameters whereas get accessor of an indexer corresponds to a method with the same formal parameters lists as the indexer

It is an error for indexer to declare a local variable with the same name as indexer parameters

All of the mentioned

correct answer d

Answer: Option (D)

Choose the keyword which declares the indexer?

base

this

super

extract

correct answer b

The indexer is declared using the name this.

Choose the operator/operators which is/are used to access the [] operator in indexers?

get

set

access

All of the mentioned

correct answer a,b

The indexer is implemented through the get and set accessors for the [] operator as:
public double this[int idx] {
get
{
if()
{
}
else
{
return([idx]);
}

}
set
{
array[idx];

}
}

Choose the correct statement among the followings?

Indexers are location indicators

Indexers are used to access class objects

Indexer is a form of property and works in the same way as a property

None of the mentioned

correct answer a,b,c

Answer: Options (A), (B) and (C)

By definition

For a class student consisting of indexer,which among the following declaration of indexers runs the code successfully ?
student a = new student();
a[1,2] = 20;

class student
   {int[,] p =newint[6, 6];public property WriteOnly intthis[int i, int j]{set{
               a[i, j]=value;}}}

class student
   {int[,] a =newint[6, 6];publicintthis[int i, int j]{set{
               a[i, j]=value;}}}

class student
   {int[,] a =newint[6, 6];publicint property WriteOnly
       {set{
               a[i, j]=value;}}}

 None of the mentioned

correct answer b

Answer: Option (B)

Choose the correct option among the following indexers which correctly allows to index in same way as an array?

A class

An interface

A function

A property

correct answer a,b

Answer: Option (A) and (B)

Which among the following are the advantages of using indexers?

To use collection of items at a large scale we make use of indexers as they utilize objects of class that represent the collection as an array

Indexers are also convenient as they can also make use of different types of indexers like int, string etc

None of the mentioned

All of the mentioned

correct answer a,b

Indexers provides a view at large scale to visualize a collection of items as an array.It is really easy to use the object of the class that represents a collection as if it is an array.Hence, indexed properties allow us to represent such a view. Indexers can also use different types of indexes like int , string etc. Use int as an index where sequential access to a collection is desired.When symbolic access is needed,use string as an index.

Choose the correct alternative that utilizes the indexed property such that a group named class has indexed property which stores or retrieves value to/from an array of 5 numbers?

group[3] = 34;

group g = new group();
g[3] = 34;

Console.WriteLine(group[3]);

group g = new group();
Console.WriteLine(g[3]);

correct answer b,d

Answer: Option (B) and (D)

Choose the correct statement about properties describing the indexers?

No need to use the name of the property while using an indexed property

An indexer property should accept at least one argument

Indexers can be overloaded

All of the mentioned

correct answer d