Miscellaneous in C Sharp
practice.

Among the given pointers which of the following cannot be incremented?

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();
    }
}

Which of the following statements are incorrect?

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();
    }
}

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

Pointer variable is used to hold the . . . . . . . . of the variable.

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();
}

Which of these access specifiers must be used for class so that it can be inherited by another subclass?

Which of these statements is incorrect?

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();
   }
}

Choose the method defined by MemberInfo.

Which among the following is the correct statement about the using statement used in C#.NET?

Which of these methods of class String is used to extract a substring from a String object?

What will be the output of the following C# code snippet?

class Program
{
    static void Main(string[] args)
    {
        char []chars = {'a', 'b', 'c'};
        String s = new String(chars);
        Console.WriteLine(s);
        Console.ReadLine();
    }
}

If ListBox is the class of System.Windows.Forms namespace. Then, the correct way to create an object of ListBox class is?

What will be the output of the following C# code snippet?

unsafe static void Main()
{
    int a = 5;
    int b = 5;
    int c = 5;
    int*[] ptr = new int* [3];
    ptr[0] = &a;
    ptr[1] = &b;
    ptr[2] = &c;
    for (a = 0; a < 3; a++)
    {
        c += *ptr[a];
        Console.WriteLine(c);
    }
    Console.ReadLine();
}

What will be the output of the following C# code snippet?

static void Main(string[] args)
{
    string s1 = "Hello" + "c" + "Sharp";
    Console.WriteLine(s1);
    Console.ReadLine();
}

Which of these methods of class String is used to check whether a given string starts with a particular substring or not?

What will be the output of the following C# code snippet?

class static_out
{
    public static int x;
    public  static int y;
    public int add(int a, int b)
    {
        x = a + b;
        y = x + b;
        return 0;
    }
}    
class Program
{
    static void Main(string[] args)
    {
        static_out obj1 = new static_out();
        static_out obj2 = new static_out();   
        int a = 2;
        obj1.add(a, a + 1);
        obj2.add(5, a);
        Console.WriteLine(static_out.x + " " + static_out.y );     
        Console.ReadLine();
    }
}

What will be the output of the following C# code snippet?

class MyClass
{
    char ch = 'A';
    int e = 4;
    int k = 9;
    int z = 6;
    public IEnumerator GetEnumerator()
    {
        for (int i = 0; i < 26; i++)
        {
            if (i == e*k /z) yield break; 
            yield return (int)(ch + i);
        }
    }
}
class Program
{
    static void Main(string[] args)
    {
        MyClass mc = new MyClass();
        foreach(int ch in mc)
        Console.Write(ch + " ");
        Console.WriteLine();
        Console.ReadLine();
    }
}