In this article you can see how to calculate factorial of a number using recursive function , while loop and from for loop below are the three function just pass number that you want to calculate factorial and it will return the output (i.e factorial of the number).

check out more programs Reverse number program in c# and Get max occurred character in string

## Calculate factorial using recursive function

public double factorial_Recursion(int number)
{
if (number == 1)
return 1;
else
return number * factorial_recursion(number - 1);
}

## Calculate factorial using while loop

public double factorial_WhileLoop(int number)
{
double result = 1;
while (number != 1)
{
result = result * number;
number = number - 1;
}
return result;
}

## Calculate factorial using for loop

public double factorial_ForLoop(int number)
{
double result = 1;
for (int i = number; i > 1; i--)
{
result = result * i;
}
return result;

}

double result = factorial_recursion(11);
double result1 = factorial_WhilLoop(11);
double result2 = factorial_ForLoop(11);

### Popular posts from this blog

Often we have a requirement to upload files in Asp.net, Mvc c# application but when it comes to uploading larger file, we always think how to do it as uploading large file in one go have many challenges like UI responsiveness, If network fluctuate for a moment in between then uploading task get breaks and user have to upload it again etc.
How to validate that string contains only alphanumeric value with some spacial character and with whitespace and how to validate that user can only input alphanumeric with given special character or space in a textbox (like name fields or remarks fields). In remarks fields we don't want that user can enter anything, user can only able to enter alphanumeric with white space and some spacial character like -,. etc if you allow. Some of regular expression given below for validating alphanumeric value only, alphanumeric with whitspace only and alphanumeric with whitespace and some special characters.
In this article i will explain how to restore NuGet package, build and publish web application (asp.net c#, Mvc) from command line using "MsBuild.exe".
Recently I have posted how to sort only current page of gridview , Scrollble gridview with fixed header through javascript , File upload control inside gridview during postback and now i am going to explain how to handle click event of linkbutton or any button type control inside gridview. We can handle click event of any button type control inside gridview by two way first is through event bubbling and second one is directly (in this type of event handling we need to access current girdviewrow container)
How to validate that input string contains only alphabets, validating that textbox contains only alphabets (letter), so here is some of the ways for doing such task. char have a property named isLetter which is for checking if character is a letter or not, or you can check by the regular expression  or you can validate your textbox through regular expression validator in asp.net. Following code demonstrating the various ways of implementation.