🚀 Programming Example

C# Program - Factorial program

👁 319 Views

💻 Practical Program

📘 Step Learning

Factorial Program in C#: 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

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.

💻 Program Code

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);    
     }  
  }

🖥 Program Output

Enter any Number: 6
Factorial of 6 is: 720

📘 Explanation

None

🎯 How to learn from this example

First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.

🔥 Practice suggestion

Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.

⚡ Quick Practice Flow

Follow this learning sequence for better understanding.

Read the topic carefully
Understand the algorithm
Study the code line-by-line
Check the output result
Practice by modifying logic