To perform matrix addition, take two matrices. Enter the rows and columns of matrix one and matrix two. Remember, both the matrix should be a square matrix to add them.Now add elements to both the matrices. Declare a new array and add both the arrays in it.arr3[i, j] = arr1[i, j] + arr2[i, j];Let us see the complete code −Exampleusing System; using System.Linq; class Demo {    static void Main() {       int m, n, i, j;           Console.Write("Enter number of rows and columns of the matrix ");       ... Read More

Dictionary is a collection of keys and values in C#. Dictionary is included in the System.Collection.Generics namespace. Dictionary is a generic type and returns an error if you try to find a key which is not there.List collection is a generic class and can store any data types to create a list.A list is a group of items −List myList = new List() {    "Maths",    "English", "   Science" };Dictionary is a set of key-value pairs.Dictionary d = new Dictionary(); d.Add("squash", 1); d.Add("football", 2); d.Add("rugby", 3);Looping is easier and faster in a list and access element using index ... Read More

Queue represents a first-in, first out collection of object. It is used when you need a first-in, first-out access to items. When you add an item to the list, it is called enqueue, and when you remove an item, it is called deque.Let us see an example of the Queue class.To add elements, use Enqueue −Queue q = new Queue(); q.Enqueue('X'); q.Enqueue('Y'); q.Enqueue('Z');To delete elements, use Dequeue −// remove elements while (q.Count > 0) Console.WriteLine(q.Dequeue());Let us see an example to add elements in a queue.Example Live Demousing System; using System.Collections; namespace Demo {    class Program {     ... Read More

You can execute statements in C# in checked or unchecked context.In checked, the exception is raised by arithmetic overflow, whereas in unchecked context, arithmetic overflow is ignored.Checked ExceptionsUse the checked keyword to explicitly enable overflow checking for integral-type arithmetic operations and conversions. For this, just set the checked keyword.Overflow checking can be enabled by compiler options, environment configuration, or use of the checked keyword.res = checked(val + 10);Let’s say the value of val is 2147483647 i.e. the max value of int type. The above will raise an error since it is checked. This enables overflow checking at runtime.Unchecked ExceptionUse the ... Read More

Firstly, set the base.double n = 2;Now set the two exponents for division.double e1 = 5; double e2 = 4;Let us see the complete code to get the result of multiplication of exponents of the same base.Example Live Demousing System; class Demo {    static void Main() {       double res, n, e1, e2;       n = 2;       e1 = 5;       e2 = 4;       res = e1 + e2;       Console.WriteLine("Result = {0}^{1} : {2}", n, res, Math.Pow(n, res));       Console.ReadLine();    } }OutputResult = 2^9 : 512

To pop the first element in the list, use the RemoveAt() method. It eliminates the element from the position you want to remove the element.Set the listList myList = new List() {    "Operating System",    "Computer Networks",    "Compiler Design" };Now pop the first element using RemoveAt(0)myList.RemoveAt(0);Let us see the complete example.Example Live Demousing System; using System.Collections.Generic; using System.Linq; class Program {    static void Main() {       List myList = new List() {          "Operating System",          "Computer Networks",          "Compiler Design"       }; ... Read More

Firstly, set the base −double n = 10;Now set the two exponents for division −double e1 = 10; double e2 = 8;Let us see the complete code to get the result of division of exponents of the same base.Example Live Demousing System; class Demo {    static void Main() {       double res, n, e1, e2;       n = 10;       e1 = 10;       e2 = 8;       res = e1 - e2;       Console.WriteLine("Result = {0}^{1} : {2}", n, res, Math.Pow(n, res));       Console.ReadLine();    } }outputResult = 10^2 : 100

Managed code is a code whose execution is managed by Common Language Runtime. It gets the managed code and compiles it into machine code. After that, the code is executed.The runtime here i.e. CLR provides automatic memory management, type safety, etc.Managed code is written in high-level languages run on top of .NET. This can be C#, F#, etc. A code compiled in any of this language with their compilers, a machine code is not generated. However, you will get the Intermediate Language code, compiled and executed by runtime.C/C++ code, called "unmanaged code” do not have that privilege. The program is ... Read More

To understand how to call Math Operations using Delegates in C#, let us see an example wherein we will divide a number.We have a class and a function in it −public class Demo {    public static double DivideFunc(double value) {       return value / 5;    } }Now, our delegate −delegate double myDelegate(double x);Set a value and call −myDelegate[] val = { Demo.DivideFunc }; result(val[0], 20);Math operation is called using delegate −static void result(myDelegate d, double value) {    double result = d(value);    Console.WriteLine("Result = {0}", result); }The above displays the following result for “value/ 5” i.e. 20/5 −Result = 4

Chained Exceptions are a chain of try-catch statements that handle exceptions. To create a chain of exceptions i.e. chained exceptions −Set the first try-catch −Examplestatic void Main(string[] args) {    try {       One();    } catch (Exception e) {       Console.WriteLine(e);    } }Now try-catch under method One() −Examplestatic void One() {    try {       Two();    } catch (Exception e) {       throw new Exception("First exception!", e);    } }The method Two() also continues chained exception.Examplestatic void Two() {    try {       Three();    } catch ... Read More