If you want to pass arguments by command line, then use command line arguments in C# −When we create a program in c#, static void main is used and we can see the arguments in it .class HelloWorld {    static void Main(string[] args) {       /* my first program in C# */       Console.WriteLine("Hello World");       Console.ReadKey();    }The string[] args is a variable that has all the values passed from the command line as shown above.Now to print those arguments, let’s say we have an argument, “One” −Console.WriteLine("Length of the arguments: "+args.Length); ... Read More

To empty an array in C#, use the Array Clear() method: The Array.Clear method in C# clears i.e.zeros out all elements.In the below example, we have first considered an array with three elements −int[] arr = new int[] {88, 45, 76};Now we have used the Array.Clear method to zero out all the arrays −Array.Clear(arr, 0, arr.Length);Let us see an example of Array.Clear method in c# −Example Live Demousing System; class Program {    static void Main() {       int[] arr = new int[] {88, 45, 76};       Console.WriteLine("Array (Old):");       foreach (int val in arr) ... Read More

Cloning in C# is useful if you want to clone an array. The Clone() method in C# is used to create a similar copy of the array. C# has the Clone method and ICloneable interface.Let us see an example to clone an array using the Clone() method −Example Live Demousing System; class Program {    static void Main() {       string[] arr = { "one", "two", "three", "four", "five" };       string[] arrCloned = arr.Clone() as string[];       Console.WriteLine(string.Join(", ", arr));       Console.WriteLine(string.Join(", ", arrCloned));       Console.WriteLine();    } ... Read More

Type casting is converting one type of data to another type. The two forms are −Implicit type conversion − These conversions are performed by C# in a type-safe manner. For example, are conversions from smaller to larger integral types and conversions from derived classes to base classes.Explicit type conversion− These conversions are done explicitly by users using the pre-defined functions. Explicit conversions require a cast operator.The following are the built-in type conversion methods −Sr.NoMethod & Description1ToBooleanConverts a type to a Boolean value, where possible.2ToByteConverts a type to a byte.3ToCharConverts a type to a single Unicode character, where possible.4ToDateTimeConverts a type ... Read More

An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type stored at contiguous memory locations.To define a single-dimensional array −int[] runs = new int[10];Let us now initialize the array in the same line −int[] runs = new int[5] {125, 173, 190, 264, 188};The following is an example displaying how to declare, initialize and display an array −Example Live Demousing System; namespace Program {    class Demo {       static void Main(string[] args) {          int[] ... Read More

Multi-dimensional arrays are also called rectangular array. You can define a 3-dimensional array of integer as −int [ , , ] a;Let us see how to define a two-dimensional array −Int[, ] a = new[3, 3]The following is an example showing how to work with a multi-dimensional i.e. rectangular array in C# −Example Live Demousing System; namespace Demo {    class Program {       static void Main(string[] args) {          int[, ] a = new int[3, 3];          a[0, 1]= 1;          a[0, 2]= 2;     ... Read More

A class is a blueprint that has member variables and functions in C#. This describes the behavior of an object.Let us see the syntax of a class to learn what are member variables − class class_name {    // member variables     variable1;     variable2;    ...     variableN;    // member methods     method1(parameter_list) {       // method body    }     method2(parameter_list) {       // method body    }    ...     methodN(parameter_list) {       // method body    } ... Read More

A member function of a class is a function that has its definition or its prototype within the class definition similar to any other variable. It operates on an object of the class of which it is a member, and has access to all the members of a class for that object.The following is an example of a member function −public void setLength( double len ) {    length = len; } public void setBreadth( double bre ) {    breadth = bre; }The following is an example showing how to access member functions in C#.Example Live Demousing System; namespace ... Read More

Each variable in C# has a specific type, which determines the size and layout of the variable's memory the range of values that can be stored within that memory and the set of operations that can be applied to the variable.To declare variables − ;Let us see an example to declare two integer variables −int a, b;Above the variable is of int type. Let us declare a variable for other types −Variable of float type.float f;Variable of double type.double d;Let us display a variable −Example Live Demousing System; using System.Collections; class Demo {    static void Main() {     ... Read More

To declare member functions in interfaces in C# −public interface InterfaceName {    // interface members    void InterfaceMemberOne();    double InterfaceMembeTwo();    void InterfaceMemberThree() } public class ClassName: InterfaceName {    void InterfaceMemberOne() {       // interface member    } }Above we saw our interface members are −void InterfaceMemberOne(); double InterfaceMembeTwo(); void InterfaceMemberThree()We have then used it in the class for implementing interface −public class ClassName: InterfaceName {    void InterfaceMemberOne() {       // interface member    } }