gs gs108 Delegates, Generics and LINQ - Generic Methods - Quiz No.1
gs gs108 CSharp Quiz
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Question 1: In the following C# code, which of the following statement is not correct?
public class MyContainer<T> where T: class, IComparable { /* insert code here */ }
Class MyContainer requires that its type argument must implement Icomparable interface
There are multiple constraints on type argument to MyContainer class
Class MyContainer requires that its type argument must be a reference type (class)
Compiler will report an error
Question 2: In the following C# code, which statements are perfectly valid?
public class Csharp { public void subject<S>(S arg) { Console.WriteLine(arg); } } class Program { static Void Main(string[] args) { Csharp c = new Csharp(); c.subject("hi"); c.subject(20); } }
Run time exception error
Compile time error
Code runs successfully and prints required output
None of the mentioned
Question 3: Which of the given statements are valid about generics in .NET Framework?
generics are useful in collection classes in .NET framework
generics delegates are not allowed in C#.NET
generics is a not language feature
all of the mentioned
Question 4: Which statement is valid for the following C# code snippet?
public class Generic<T> { public T Field; } class Program { static void Main(string[] args) { Generic<String> g = new Generic<String>(); g.Field = "Hi"; Console.WriteLine(g.Field); } }
Compile time error
Generic being a keyword cannot be used as a class name
Runtime error
Code runs successfully
Question 5: What will be the output of the following C# code?
public class Generic<T> { public T Field; } class Program { static void Main(string[] args) { Generic<int> g2 = new Generic<int>(); Generic<int> g3 = new Generic<int>(); g2.Field = 8; g3.Field = 4; if (g2.Field % g3.Field == 0) { Console.WriteLine("A"); } else Console.WriteLine("Prints nothing:"); Console.ReadLine(); } }
Compile time error
A
Run time error
Code runs successfully but prints nothing
Question 6: Which of the following is a valid statement about generic procedures in C#.NET are?
All procedures in a Generic class are generic
Generic procedures should take at least one type parameter
Only those procedures labeled as Generic are Generic
None of the mentioned
Question 7: In the following C# code, which of the following statements are perfectly valid?
public class MyContainer<T> where T: IComparable { /* insert code here */ }
Class MyConatiner requires that its type argument must implement Icomparable interface
There are multiple constraints on type argument to MyContainer class
Type argument of class MyContainer should be Icomparable
None of the mentioned
Question 8: Which of the following statements are valid in the following C# code snippet?
public class Generic<T> { public T Field; public void testSub() { T i = Field + 1; } } class Program { static void Main(string[] args) { Generic<int>g = new Generic<int>(); g.testSub(); } }
code runs successfully but prints nothing
code runs successfully and prints 1
program will give run time error
compile time error
Question 9: Which among the given classes represents System.Collections.Generic namespace?
SortedDictionary
Sorted Array
Stack
All of the mentioned
Question 10: What will be the output of the following C# code snippet?
public class Generic<T> { Stack<T> stk = new Stack<T>(); public void push(T obj) { stk.Push(obj); } public T pop() { T obj = stk.Pop(); return obj; } } class Program { static void Main(string[] args) { Generic<int> g = new Generic<int>(); g.push("Csharp"); Console.WriteLine(g.pop()); Console.ReadLine(); } }
Compile time error
Csharp
0
Run time error
