Arrays and Strings in C Sharp
practice.

What is the correct way to declare and initialize a jagged array with 2 rows in C#?

What is the correct syntax to access the second character of a string named text in C#?

What is the result of the expression Array.IndexOf(numbers, 5) where numbers = {1, 2, 3, 4, 5} in C#?

In C#, which method is used to split a string into substrings based on a specified delimiter?

What is the correct way to declare and initialize a multidimensional array with 3 rows and 4 columns in C#?

Which of these methods of class String is used to extract all the characters from a String object?

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

class math
{
    public int a,b;
    public math(int i,  int j)
    {
        a = i;
        b = j;
    }
    public  void sum(math m)
    {
        m.a *= 2;
        m.b += 2;
    }
}    
class Program
{
    static void Main(string[] args)
    {
        math t = new math(20,  10);
        t.sum(t);
        Console.WriteLine(t.a + "  " + t.b);   
        Console.ReadLine();
    }
}

Which of these base classes are accessible to the derived class members?

What is the process by which we can control parts of a program that can access the members of a class?

Which of these methods of class are used to remove the leading and backward whitespaces?

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

static void Main(string[] args)
{
    String a = "Ilove";
    String b = "CSHARP";
    b = string.Concat(a, '  ', b);
    Console.WriteLine(b);
    Console.ReadLine();
}

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

static void Main(string[] args)
{
    String obj = "hello";
    String obj1 = "world";   
    String obj2 = obj;
    string s = obj+" "+obj1;
    Console.WriteLine(s.IndexOf('r'));
    Console.ReadLine();
}

What does the term 'immutable' means in term of string objects?

Accessibility modifier defined in a class are?

Which of these methods is an alternative to getChars() that stores the characters in an array of bytes?

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

static void main(string[] args)
{
    int i;
    int res = fun (out i);
    console.writeline(res);
    console.readline();
}
static int fun(out int i)
{
    int s = 1;
    i = 7;
    for (int j = 1; j <= i; j++ )
    s = s * j;
    return s;
}

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

static void Main(string[] args)
{
    String obj = "hello";
    String obj1 = "world";   
    String obj2 = obj;
    string s = obj + "  " + obj1;
    Console.WriteLine(s.Substring(6 ,5));
    Console.ReadLine();
}

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

static void Main(string[] args)
{
    int i, j;
    int[, ] arr = new int[ 3, 3];
    for (i = 0; i < 3; ++i)
    {
        for (j = 0; j < 3; ++j)
        {
            arr[i, j] = i * 2 + i * 2;
            Console.WriteLine(arr[i, j]);
        }
        Console.ReadLine();
    }
}

The modifiers used to define an array of parameters or list of arguments is . . . . . . . .

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

static void Main(string[] args)
{
    object[] a = {" 1 ", 4.0f, " harsh "};
    fun(a);
    Console.ReadLine();
}
static void fun(params object[] b)
{
    for (int i = 0; i < b.Length - 1; i++)
        Console.WriteLine(b[i] + " ");
}