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;       ... Read More

#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 ... Read More

An iterator method performs a custom iteration over a collection. It uses the yield return statement and returns each element one at a time. The iterator remembers the current location and in the next iteration the next element is returned.The following is an example −Example Live Demousing System; using System.Collections.Generic; using ... Read More

To find the number of dimensions of an array, use the Array Rank property. This is how you can define it −arr.RankHere, arr is our array −int[, ] arr = new int[3, 4];If you want to get the rows and columns it has, then uses the GetLength property −arr.GetLength(0); arr.GetLength(1);The ... Read More

The C# static class cannot be instantiated and can only have only static members. The static class in C# is sealed and cannot contain instance constructors.The following is an example with static class and static members −Example Live Demousing System; public static class Demo {    public static float PI ... Read More

A thread is defined as the execution path of a program. Each thread defines a unique flow of control. If your application involves complicated and time-consuming operations, then it is often helpful to set different execution paths or threads, with each thread performing a particular job.The life cycle of a ... Read More

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 {     ... Read More

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 ... Read More

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 ... Read More

Set the following, if the nth number is let’s say num −int n = num- 1; int[] val = new int[n + 1];Then set the default Fibonacci numbers on the first and second position −val[0]= 0; val[1]= 1;Loop through i=2 to i