Arrays and Strings in C Sharp MCQ question and answer with solution | C# Program MCQs

static void Main(string[] args)
{
    String c = "Hello";
    String a ;
    a = c.Replace('l', 'w');
    Console.WriteLine(a);
    Console.ReadLine();
}

static void Main(string[] args)
{
    String c = "Hello i love you";
    String a ;
    a = c.Substring(12, 3);
    Console.WriteLine(a);
    Console.ReadLine();
}

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

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