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Csharp Articles
Page 112 of 196
How to write single-line comments in C#?
If you want to add a comment that restricts itself to a single line, then use the single-line comments −// variable int i = 20;The following is a sample C# program showing how to add single-line comments −Example Live Demousing System; namespace Demo { class Program { static void Main(string[] args) { // display text Console.WriteLine("Hello World"); Console.ReadKey(); } } }OutputHello World
Read MoreHow to get int value from enum in C#?
Firstly, set the enum −public enum Vehicle { Car, Bus, Truck }Now use typecasting to cast an enum to int −int a = (int)Vehicle.Car;The following is the complete code to cast an enum to int −Example Live Demousing System; public class Demo { public enum Vehicle { Car, Bus, Truck } public static void Main() { int a = (int)Vehicle.Car; int b = (int)Vehicle.Bus; int c = (int)Vehicle.Truck; Console.WriteLine("Car = {0}", a); Console.WriteLine("Bus = {0}", b); Console.WriteLine("Truck = {0}", c); } }OutputCar = 0 Bus = 1 Truck = 2
Read MoreWhat is garbage collection in C#?
The garbage collector (GC) manages the allocation and release of memory. The garbage collector serves as an automatic memory manager.You do not need to know how to allocate and release memory or manage the lifetime of the objects that use that memory.An allocation is made any time you declare an object with a “new” keyword or a value type is boxed. Allocations are typically very fast.When there isn’t enough memory to allocate an object, the GC must collect and dispose of garbage memory to make memory available for new allocations.This process is known as garbage collection.Garbage Collection in C# has ...
Read MoreHow to write multi-line comments in C#?
The comments that spread more than one line is called multi-line comments −/* The following is a multi-line Comment In C# /*The /*...*/ is ignored by the compiler and it is put to add comments in the program.The following is a sample C# program showing how to add MULTI-line comments −using System; namespace Demo { class Program { static void Main(string[] args) { /* The following is a multi-line Comment In C# /* // printing Console.WriteLine("Hello World"); Console.ReadKey(); } } }
Read MoreC# program to print all the numbers divisible by 3 and 5 for a given number
To print the numbers divisible by 3 and 5, use the && operator and check two conditions −f (num % 3 == 0 && num % 5 == 0) {}If the above condition is true, that would mean the number is divisible by 3 as well as 5.The following is the complete code −Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Demo { class MyApplication { static void Main(string[] args) { int num; num = 15; Console.WriteLine("Number: "+num); // checking if the number is divisible by 3 and 5 if (num % 3 == 0 && num % 5 == 0) { Console.WriteLine("Divisible by 3 and 5"); } else { Console.WriteLine("Not divisible by 3 and 5"); } Console.ReadLine(); } } }OutputNumber: 15 Divisible by 3 and 5
Read MoreHow to assign same value to multiple variables in single statement in C#?
To assign same value to multiple variables in a single line, use the = operator −val1 = val2 = 20;The above statement assigns 20 to the variables val1 and val2 as shown in the following code −Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Demo { class MyApplication { static void Main(string[] args) { int val1, val2; val1 = val2 = 20; Console.WriteLine("Value1 = "+val1); Console.WriteLine("Value2 = "+val2); } } }OutputValue1 = 20 Value2 = 20
Read MoreC# program to print all sublists of a list
Firstly, create a list −List list = new List();The string here is “xyz” for which we will find the sublists. While looping we will declare another list, that would generate sublists on every true iteration −for (int i = 1; i < str.Length; i++) { list.Add(str[i - 1].ToString()); List newlist = new List(); for (int j = 0; j < list.Count; j++) { string list2 = list[j] + str[i]; newlist.Add(list2); } list.AddRange(newlist); }The following is the complete code −Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Demo ...
Read MoreHow to check if a C# list is empty?
Use the Any method to find whether the list is empty or not.Set the list −var subjects = new List(); subjects.Add("Maths"); subjects.Add("Java"); subjects.Add("English"); subjects.Add("Science"); subjects.Add("Physics"); subjects.Add("Chemistry");Now set the following condition to check whether the list is empty or not −bool isEmpty = !subjects.Any(); if(isEmpty) { Console.WriteLine("Empty"); }else { Console.WriteLine("List is not empty"); }The following is the complete code −Example Live Demousing System; using System.Collections.Generic; using System.Linq; public class Demo { public static void Main(string[] args) { var subjects = new List(); subjects.Add("Maths"); ...
Read MoreHow to calculate the power exponent value using C#?
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
Read MoreFibonacci Series in C#
To find Fibonaccli series, firsty set the first two number in the series as 0 and 1.int val1 = 0, val2 = 1, vNow loop through 2 to n and find the fibonai series. Every number in the series is the sum of the last 2 elements −for(i=2;i
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