To calculate the power exponent value, use the Math.pow() method.Here, n is the number and p is the power −double res = Math.Pow(n, p);The following is the complete code −Example Live Demousing System; class Program {    static void Main() {       double n, p;       n = 7;       p = 3;       Console.WriteLine("Exponent Power= "+n);       double res = Math.Pow(n, p);       Console.WriteLine("Result= {0}", res);       Console.ReadLine();    } }OutputExponent Power= 7 Result= 343

The sizeof() datatype returns the size of a data type. Let’s say you need to find the size of int datatype −sizeof(int);For double datatype −sizeof(double);Let us see the complete example to find the size of various datatypes −Example Live Demousing System; namespace Demo {    class Program {       static void Main(string[] args) {          Console.WriteLine("The size of long is {0}", sizeof(long));          Console.WriteLine("The size of double is {0}", sizeof(double));          Console.ReadLine();       }    } }OutputThe size of long is 8 The size of double is 8

A loop statement allows us to execute a statement or a group of statements multiple times. The following are the loops supported in C# −Sr.NoLoop Type & Description1while loopIt repeats a statement or a group of statements while a given condition is true. It tests the condition before executing the loop body.2for loopIt executes a sequence of statements multiple times and abbreviates the code that manages the loop variable.3do...while loopIt is similar to a while statement, except that it tests the condition at the end of the loop bodyWith C#, you can also use foreach loop as shown below −Example Live ... Read More

The Array.LongLength property gets a 64-bit integer that represents the total number of elements in all the dimensions of the Array.Let’s say your array of long data type is −long[,] arr1= new long[15, 35];Use the LongLength property to get an integer representing the total number of elements in all dimensions of the Array −arr1.LongLengthLet us see an example to implement the Array.LongLength property of array class −Example Live Demousing System; class Program {    static void Main() {       long[,] arr1= new long[15, 35];       long len1 = arr1.GetLongLength(0);       Console.WriteLine(len1);       Console.WriteLine(arr1.LongLength);    } }Output15 525

The Array.Lenth property in C# is used to find the length of the array.Let’s set the array class first −Array arr = Array.CreateInstance(typeof(String), 3); arr.SetValue("Electronics", 0); arr.SetValue("Clothing", 1); arr.SetValue("Appliances", 2);Now since the array’s length is 3, the Length property will give the result 3 −arr.LengthThe following is the code to implement Array.Length property of array class −Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace lower {    class Program {       static void Main(string[] args) {          Array arr = Array.CreateInstance(typeof(String), 3);          arr.SetValue("Electronics", 0);         ... Read More

C# provides two techniques to implement static polymorphism −Function overloadingOperator overloadingFunction OverloadingTwo or more than two methods having the same name but different parameters is what we call function overloading in C#.Function overloading in C# can be performed by changing the number of arguments and the data type of the arguments.Let’s say you have a function that prints multiplication of numbers, then our overloaded methods will have the same name but different number of arguments −public static int mulDisplay(int one, int two) { } public static int mulDisplay(int one, int two, int three) { } public static int mulDisplay(int one, ... Read More

The Array.IsReadOnly property gets a value indicating whether the Array is read-only.Firstly, set the array values −Array arr = Array.CreateInstance(typeof(String), 3); arr.SetValue("Electronics", 0); arr.SetValue("Clothing", 1);Now let’s use the IsReadOnly property to find whether the Array is read-only. If the array is read-only, then it cannot be updated −arr.IsReadOnlyThe following is the complete example stating the usage of Array.IsReadOnly property −Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace lower {    class Program {       static void Main(string[] args) {          Array arr = Array.CreateInstance(typeof(String), 3);          arr.SetValue("Electronics", 0);   ... Read More

The IsFixedSize property of ArrayList class is used to get a value indicating whether the ArrayList has a fixed size.The following is an example stating the usage of isFixedSize property −Example Live Demousing System; using System.Collections; class Demo {    public static void Main() {       ArrayList arrList = new ArrayList();       Console.WriteLine("Adding some numbers:");       arrList.Add(45);       arrList.Add(78);       Console.WriteLine(arrList.Count);       Console.WriteLine("myArrayList.IsFixedSize = " + arrList.IsFixedSize);     } }OutputAdding some numbers: 2 myArrayList.IsFixedSize = FalseAbove we have added an array list −ArrayList arrList ... Read More

The final block is used to execute a given set of statements, whether an exception is thrown or not thrown. For example, if you open a file, it must be closed whether an exception is raised or not.The error handling blocks are implemented using the try, catch, and finally keywords.ExampleYou can try to run the following code to implement finally statement −using System; namespace ErrorHandlingApplication {    class DivNumbers {       int result;       DivNumbers() {          result = 0;       }       public void division(int ... Read More

Encapsulation in C# prevents access to implementation details. Implement Encapsulation in C# using access specifiers.The following are the access specifiers supported by C# −PublicPrivateProtectedInternalProtected internalEncapsulation can be understood by taking an example of private access specifier that allows a class to hide its member variables and member functions from other functions and objects.In the following example we have length and width as variables assigned private access specifier −Example Live Demousing System; namespace RectangleApplication {    class Rectangle {       private double length;       private double width;       public void Acceptdetails() {     ... Read More