22.
What will be the output of given code snippet?
class Program
{
    static void Main(string[] args)
    {
        char []chars = {'a', 'b', 'c'};
        String s = new String(chars);
        String s1 = "abcd";
        int len1 = s1.Length;
        int len2 = s.Length;
        Console.WriteLine(len1 + " " + len2);
        Console.ReadLine();
    }
}

23.
Which of the following statements are incorrect?

24.
What will be the output of the following C# code snippet?
class UnsafeCode
{
    unsafe static void Main()
    {
        int* ptrs = stackalloc int[3];
        ptrs[0] = 1;
        ptrs[1] = 2;
        ptrs[2] = 3;
        for (int i = 2; i >=0; i--)
        Console.WriteLine(ptrs[i]);
        Console.ReadLine();
    }
}

25.
What is meant by preprocessor directive in C#.NET?

27.
What will be the output of the following C# code snippet?
static void Main(string[] args)
{
    string s1 = " Ixg";
    string s2 = s1.Insert(3,"i");
    string s3 = s2.Insert(5, "o");
    for (int i = 0; i < s3.Length; i++)
    Console.WriteLine(s3[i]);
    Console.ReadLine();
}

29.
Which of these statements is incorrect?

30.
What will be the output of the following C# code snippet?
class UnsafeCode
{
    unsafe static void Main()
    {
        string str = "this is a test";

            fixed (char* p = str)
           {
               for (int i = str.Length-1 ;p[i] != 0 ;i--)
               Console.Write(p[i]);
           }
       Console.ReadLine();
   }
}

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