Answer & Solution
Answer: Option B
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62. Select the Keyword which supports the run time type identification?
63. What will be the output of the following C# code snippet?
static void Main()
{
int[] nums = { 1, 2, 3, 4, 5 };
Console.Write("Original order: ");
foreach(int i in nums)
Console.Write(i + " ");
Array.Reverse(nums);
Console.Write("Reversed order: ");
foreach(int i in nums)
Console.Write(i + " ");
Console.WriteLine();
}
static void Main()
{
int[] nums = { 1, 2, 3, 4, 5 };
Console.Write("Original order: ");
foreach(int i in nums)
Console.Write(i + " ");
Array.Reverse(nums);
Console.Write("Reversed order: ");
foreach(int i in nums)
Console.Write(i + " ");
Console.WriteLine();
}64. Choose the wrong statement about the LINQ?
65. What will be the output of the following C# code snippet?
class Program
{
static void Main(string[] args)
{
int[] nums = { 1, -2, 3, 0, -4, 5};
var posNums = from n in nums
where n >= 0
select n;
foreach (int i in posNums)
Console.Write(i + " ");
Console.WriteLine();
Console.ReadLine();
}
}
class Program
{
static void Main(string[] args)
{
int[] nums = { 1, -2, 3, 0, -4, 5};
var posNums = from n in nums
where n >= 0
select n;
foreach (int i in posNums)
Console.Write(i + " ");
Console.WriteLine();
Console.ReadLine();
}
}66. Select the interfaces implemented by array class.
67. What will be the output of the following C# code snippet?
class Program
{
static void Main(string[] args)
{
int[] nums = { 1, -2, 3, 0, -4, 5 };
var posNums = from n in nums
where n > -5 && n < 6
orderby n descending
select n;
Console.Write("The positive values in nums: ");
foreach (int i in posNums) Console.Write(i + " ");
Console.WriteLine();
Console.ReadLine();
}
}
class Program
{
static void Main(string[] args)
{
int[] nums = { 1, -2, 3, 0, -4, 5 };
var posNums = from n in nums
where n > -5 && n < 6
orderby n descending
select n;
Console.Write("The positive values in nums: ");
foreach (int i in posNums) Console.Write(i + " ");
Console.WriteLine();
Console.ReadLine();
}
}68. Select the class which is the base class for all arrays in C#?
69. What will be the output of the following C# code snippet?
class Program
{
static void Main(string[] args)
{
int[] nums = { 1, -2, 3, 0, -4, 5 };
var posNums = from n in nums
where n % 2 ==0
select n;
Console.Write("The positive values in nums: ");
foreach (int i in posNums) Console.Write(i + " ");
Console.WriteLine();
Console.ReadLine();
}
}
class Program
{
static void Main(string[] args)
{
int[] nums = { 1, -2, 3, 0, -4, 5 };
var posNums = from n in nums
where n % 2 ==0
select n;
Console.Write("The positive values in nums: ");
foreach (int i in posNums) Console.Write(i + " ");
Console.WriteLine();
Console.ReadLine();
}
}70. What will be the output of the following C# code snippet?
class Program
{
static void Main(string[] args)
{
int[] nums = { 16, 9, 25};
var posNums = from n in nums
where n > 0
select Math.Sqrt(n);
Console.Write("The positive values in nums: ");
foreach (int i in posNums) Console.Write(i + " ");
Console.WriteLine();
Console.ReadLine();
}
}
class Program
{
static void Main(string[] args)
{
int[] nums = { 16, 9, 25};
var posNums = from n in nums
where n > 0
select Math.Sqrt(n);
Console.Write("The positive values in nums: ");
foreach (int i in posNums) Console.Write(i + " ");
Console.WriteLine();
Console.ReadLine();
}
}