using System;
using System.Collections.Generic;
using System.Text;

class Program {
    static void Main(string[] args) {
        object[] stuff = { "Hello", 20.9, 1, "There", "83", 99.99933 };
        Console.WriteLine("The Stuff: {0} , {1} , {2} , {3} , {4} , {5} ", stuff);

        Console.WriteLine("{0}, Number{0}, Number{0}", 9);

    }
}

   
     

   
  

using System;
using System.Collections.Generic;
using System.Text;

class Program {
    static void Main(string[] args) {

        string formatStr;
        formatStr = String.Format("Don't you wish you had {0:C} in your account?", 99989.987);
        Console.WriteLine(formatStr);
    }
}

   
     

   
  

using System;

class MainClass {

    public static void Main() {
        
        float myFloat = 1234.56789f;
        string myString8 = String.Format("{0, 10:f3}", myFloat);
        Console.WriteLine("String.Format("{0, 10:f3}", myFloat) = " + myString8);
    
    }
}

   
     

   
 

using System;


  public static class StringExtensions
  {
        public static bool EqualsIgnoreCase(this string me, string them)
        {
            return me.Equals(them, StringComparison.CurrentCultureIgnoreCase);
        }
  }

   
     

   
 

using System;


  public static class StringExtensions
  {

    public static bool ContainsIgnoreCase(this string me, string other)
    {
      return me.ToLower().Contains(other.ToLower());
    }

  }

   
     

   
  
using System;

class Sample {
    public static void Main() {
        String str1 = "this is a test";
        String str2 = "This is a test";
        String str;
        int result;
    
        Console.WriteLine("Honor case:");
        result = String.Compare(str1, 2, str2, 2, 2, false);
        str = ((result < 0) ? "less than" : ((result > 0) ? "greater than" : "equal to"));
        Console.Write("Substring &#039;{0}&#039; in &#039;{1}&#039; is ", str1.Substring(2, 2), str1);
        Console.Write("{0} ", str);
        Console.WriteLine("substring &#039;{0}&#039; in &#039;{1}&#039;.", str2.Substring(2, 2), str2);
    
    }
}

   
    
     

   
  
using System;

class Sample {
    public static void Main() {
        String str1 = "this is a test";
        String str2 = "This is a test";
        String str;
        int result;
    
        result = String.Compare(str1, 2, str2, 2, 2, true);
        str = ((result < 0) ? "less than" : ((result > 0) ? "greater than" : "equal to"));
        Console.Write("Substring &#039;{0}&#039; in &#039;{1}&#039; is ", str1.Substring(2, 2), str1);
        Console.Write("{0} ", str);
        Console.WriteLine("substring &#039;{0}&#039; in &#039;{1}&#039;.", str2.Substring(2, 2), str2);
    
    }
}