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The increment operator is ++ operator. If used as prefix on a variable, the value of variable gets incremented by 1. After that the value is returned unlike Postfix operator. It is called Prefix increment operator. In the same way the decrement operator works but it decrements by 1.For example, ++a;The following is an example demonstrating Prefix increment operator −Example Live Demousing System; class Program { static void Main() { int a, b; a = 10; Console.WriteLine(++a); b = a; Console.WriteLine(a); Console.WriteLine(b); } }Output11 11 11
While declaring a method, you are not sure of the number of arguments passed as a parameter. C# param arrays (or parameter arrays) come into help at such times.This is how you can use the param −public int AddElements(params int[] arr) { }The following is the complete example −Example Live Demousing System; namespace Program { class ParamArray { public int AddElements(params int[] arr) { int sum = 0; foreach (int i in arr) { sum += i; } ... Read More
A 2-dimensional array is a list of one-dimensional arrays. Declare it like the two dimensional array shown below −int [, ] aTwo-dimensional arrays may be initialized by specifying bracketed values for each row.int [, ] a = new int [4, 4] { {0, 1, 2, 3} , {4, 5, 6, 7} , {8, 9, 10, 11} , {12, 13, 14, 15} };The following is an example showing how to work with two-dimensional arrays in C# −Example Live Demousing System; namespace ArrayApplication { class MyArray { static void Main(string[] args) { /* an ... Read More
The "var" keyword initializes variables with var support. Just assign whatever value you want for the variable, integer, string, float, etc.Example Live Demousing System; namespace Demo { class Program { static void Main(string[] args) { var myInt = 5; var myString = "Amit"; Console.WriteLine("Rank: {0} Name: {1}",myInt,myString); } } }OutputRank: 5 Name: AmitWe can also use var in arrays −Example Live Demousing System; namespace Demo { class Program { static void Main(string[] args) { var myInt = new int[] {65,43,88,56}; foreach(var val in myInt) Console.WriteLine(val); } } }Output65 43 88 56
The Abort() method is used for destroying threads.The runtime aborts the thread by throwing a ThreadAbortException. This exception cannot be caught, the control is sent to the finally block, if any.The following is an example showing how to destroy threads −Example Live Demousing System; using System.Threading; namespace MultithreadingApplication { class ThreadCreationProgram { public static void CallToChildThread() { try { Console.WriteLine("Child thread starts"); // do some work, like counting to 10 for (int counter = 0; counter
Use the IPHostEntry.AddressList Property to get IP Address −IPHostEntry myIP = Dns.GetHostEntry(hostName); IPAddress[] address = myIP.AddressList;Try the following code to display IP address −Exampleusing System; using System.Net; class Program { static void Main() { String hostName = string.Empty; hostName = Dns.GetHostName(); Console.WriteLine("Hostname: "+hostName); IPHostEntry myIP = Dns.GetHostEntry(hostName); IPAddress[] address = myIP.AddressList; for (int i = 0; i < address.Length; i++) { Console.WriteLine("IP Address {1} : ",address[i].ToString()); } Console.ReadLine(); } }
Use the Name property to display the name of the current thread in C#.Firstly, use the currentThread property to display information about a thread −Thread thread = Thread.CurrentThread;Now use the thread.Name property to display name of the thread −thread.NameLet us see the complete code show current thread’s name in C# −Example Live Demousing System; using System.Threading; namespace Demo { class MyClass { static void Main(string[] args) { Thread thread = Thread.CurrentThread; thread.Name = "My Thread"; Console.WriteLine("Thread Name = {0}", thread.Name); Console.ReadKey(); } } }OutputThread Name = My Thread
#error directiveThe #error directive allows generating an error from a specific location in your code.Let us see an example −Example Live Demousing System; namespace Demo { class Program { public static void Main(string[] args) { #if (!ONE) #error ONE is undefined #endif Console.WriteLine("Generating a user-defined error!"); } } }After running the above program, a user-defined error generates −OutputCompilation failed: 1 error(s), 0 warnings error CS1029: #error: 'ONE is undefined'#warning directiveThe #warning directive allows generating a level ... Read More
All preprocessor directives begin with #, and only white-space characters may appear before a preprocessor directive on a line. Preprocessor directives are not statements, so they do not end with a semicolon (;).#ifThe #if directive allows testing a symbol or symbols to see if they evaluate to true.#elseIt allows to create a compound conditional directive, along with #if.#elifIt allows creating a compound conditional directive.#endifThe #endif specifies the end of a conditional directive.The following is an example showing the usage of #if, #elif, #else and #endif directives −Example Live Demo#define One #undef Two using System; namespace Demo { class ... Read More
Stack class represents a last-in, first out collection of object. It is used when you need a last-in, first-out access of items.The following is the property of Stack class −Count − Gets the number of elements in the stack.Push OperationAdd elements in the stack using the Push operation −Stack st = new Stack(); st.Push('A'); st.Push('B'); st.Push('C'); st.Push('D');Pop OperationThe Pop operation removes elements from the stack starting from the element on the top.Here is an example showing how to work with Stack class and its Push() and Pop() method −Using System; using System.Collections; namespace CollectionsApplication { class Program ... Read More
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