C# Factorial - c# - c# tutorial - c# net
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How to write Factorial Program in C# ?
- Factorial of a number is obtained from the result of multiplying a series of descending natural numbers. Here is source code of the C# Program to Generate the Factorial of Given Number.
- Factorial of n is the product of all positive descending integers.
- Factorial of n is denoted by n!.
For example:
4! = 4*3*2*1 = 24
6! = 6*5*4*3*2*1 = 720 click below button to copy the code. By - c# tutorial - team
- Here, 4! is pronounced as "4 factorial", it is also called "4 bang" or "4 shriek".
- The factorial is normally used in Combinations and Permutations (mathematics).
- Let?s see the factorial program in C# using for loop.
Example1:
using System;
public class FactorialExample
{
public static void Main(string[] args)
{
int i,fact=1,number;
Console.Write("Enter any Number: ");
number= int.Parse(Console.ReadLine());
for(i=1;i<=number;i++){
fact=fact*i;
}
Console.Write("Factorial of " +number+" is: "+fact);
}
} click below button to copy the code. By - c# tutorial - team
C# examples - Output :
Enter any Number: 6
Factorial of 6 is: 720Example2:
/*
* C# Program to Generate the Factorial of Given Number
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace factorial
{
class Program
{
static void Main(string[] args)
{
int i, number, fact;
Console.WriteLine("Enter the Number");
number = int.Parse(Console.ReadLine());
fact = number;
for (i = number - 1; i >= 1; i--)
{
fact = fact * i;
}
Console.WriteLine("\nFactorial of Given Number is: "+fact);
Console.ReadLine();
}
}
}click below button to copy the code. By - c# tutorial - team
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output:
Enter the Number
5
Factorial of Given Number is: 120