gs gs108 Delegates, Generics and LINQ - Delegates in Detail - Quiz No.1
gs gs108 CSharp Quiz
This quiz belongs to book/course code gs gs108 CSharp of gs organization. We have 110 quizzes available related to the book/course CSharp. This quiz has a total of 10 multiple choice questions (MCQs) to prepare and belongs to topic Delegates, Generics and LINQ. NVAEducation wants its users to help them learn in an easy way. For that purpose, you are free to prepare online MCQs and quizzes.
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Question 1: Choose the correct way to call subroutine fun() of the sample class?
class a { public void x(int p, double k) { Console.WriteLine("k : csharp!"); } } delegate void del(int i); x s = new x(); del d = new del(ref s.x); d(8, 2.2f); delegate void del(int p, double k); del d; x s = new x(); d = new del(ref s.x); d(8, 2.2f); x s = new x(); delegate void d = new del(ref x); d(8, 2.2f);
all of the mentioned
Question 2: Which of the following is the correct way to call the function abc() of the given class in the following C# code?
class csharp { public int abc(int a) { Console.WriteLine("A:Just do it!"); return 0; } } delegate void del(int a); csharp s = new csharp(); del d = new del(ref s.abc); d(10); csharp s = new csharp(); delegate void d = new del(ref abc); d(10); delegate int del(int a); del d; csharp s = new csharp(); d = new del(ref s.fun); d(10);
none of the mentioned
Question 3: Which of the following is the correct way to call the subroutine function abc() of the given class in the following C# code?
class csharp { void abc() { console.writeline("A:Just do it!"); } } csharp c = new csharp(); delegate void d = new del(ref abc); d(); delegate void del(); del d; csharp s = new csharp(); d = new del(ref s.abc); d(); csharp s = new csharp(); delegate void del = new delegate(ref abc); del();
None of the mentioned
Question 4: What will be the output of the following C# code snippet?
{ delegate void A(ref string str); class sample { public static void fun( ref string a) { a = a.Substring( 7, a.Length - 7); } } class Program { static void Main(string[] args) { A str1; string str = "Test Your C#.net skills"; str1 = sample.fun; str1(ref str); Console.WriteLine(str); } } }
Test Your
ur C#.NET
ur C#.NET Skills
None of the mentioned
Question 5: What will be the output of the following C# code snippet?
{ delegate string F(string str); class sample { public static string fun(string a) { return a.Replace(',''-'); } } class Program { static void Main(string[] args) { F str1 = new F(sample.fun); string str = str1("Test Your c#.NET skills"); Console.WriteLine(str); } } }
Test Your
Test-Your-C#.NET-Skills
ur C#.NET Skills
None of the mentioned
Question 6: Choose the statements which makes delegate in C#.NET different from a normal class?
Delegates in C#.NET is a base class for all delegates type
Delegates created in C#.NET are further not allowed to derive from the delegate types that are created
Only system and compilers can derive explicitly from the Delegate or MulticasteDelegate class
All of the mentioned
Question 7: Which of the following are the correct statements about delegates?
Delegates can be used to implement callback notification
Delegates permit execution of a method on a secondary thread in an asynchronous manner
Delegate is a user defined type
All of the mentioned
Question 8: What will be the output of the following C# code?
{ delegate string f(string str); class sample { public static string fun(string a) { return a.Replace('k', 'o'); } } class Program { static void Main(string[] args) { f str1 = new f(sample.fun); string str = str1("Test Ykur C#.NET Skills"); Console.WriteLine(str); Console.ReadLine(); } } }
Test Ykur C#.NET Skills
Test Ykour C#.NET Skills
Test Your C#.NET Skills
Test ur C#.NET Skills
Question 9: Incorrect statements about delegates are?
Delegates are reference types
Delegates are object oriented
Delegates are type safe
Only one method can be called using a delegate
Question 10: Select the modifiers which control the accessibility of the delegate?
new
protected
public
all of the mentioned
