Medium csharp

Factorial of a number

Problem

Compute factorial of 5 using a loop and print the result (120).

Hints

Initialize fact = 1 and multiply in a for loop from 1 to n.

Your practice code

Ready — edit the code above and click Run.

Solution

using System;

class Program
{
    static void Main()
    {
        int n = 5;
        long fact = 1;
        for (int i = 1; i <= n; i++)
            fact *= i;
        Console.WriteLine(fact);
    }
}

Try solving on your own first, then reveal the official answer.

Explanation

Iterative factorial avoids stack overflow for larger n. Use long for bigger values.

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