gs gs108 Indexers and Exception Handling - Introduction of Indexers - Quiz No.1
gs gs108 CSharp Quiz
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Question 1: 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
All of the mentioned
Question 2: Choose the keyword which declares the indexer?
base
this
super
extract
Question 3: Choose the operator/operators which is/are not used to access the [] operator in indexers?
get
set
access
all of the mentioned
Question 4: 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
Question 5: For a class student consisting of indexer, which among the following declaration of indexers runs the C# code successfully?
student a = new student(); a[1,2] = 20; class student { int[,] p = new int[6, 6]; public property WriteOnly int this[int i, int j] { set { a[i, j] = value; } } } class student { int[,] a = new int[6, 6]; public int this[int i, int j] { set { a[i, j] = value; } } } class student { int[,] a = new int[6, 6]; public int property WriteOnly { set { a[i, j] = value; } } }
None of the mentioned
Question 6: 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
An indexer allows an object to be indexed such as an array
All of the mentioned
Question 7: 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
Question 8: 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 = group();
Console.WriteLine(group[3]);
group g = new group(); Console.WriteLine(g[3]);
Question 9: 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
