c# program for factorial

[roodiii]

Hi Friends,

I am learning the C# programming. In which I have to write the program for factorial in C sharp. I have one code for factorial but it giving me wrong output along with many runtime errors.
If anyone has c# program for factorial then please provide me that. I would appreciate your help greatly

[Praetor]

I have following c sharp code for factorial of number. Please copy below program on your system and try to execute:

private void fctCalculae_Click
(object sender, System.EventArgs e)

{

long factr = 1;
long numb = Convert.ToInt64 (txtNumb.Text);

while ( numb > 0 && numb <= 40)

{

factr *= numb;

numb++;

}


txtNumb.Text = "";

txtNumb.Focus();

}


}

}

[Katty]

Hi friends,

Below is the C# program code to find out the factorial of any number. I have used the function concept in this program code:

public class cftr
{
static long numfact(long number)
{
if( n <= 1 )
return 1;
else
return n * numfact(n - 1);
}

static int Main(string[] ars)
{
Console.Write("factorial = ",numfact(5));

}
}

[kelfro]

Hello,

You need to implement the array concept in your code to calculate the factorial in C#. Below loop will give you some idea to implement the array. I have used the array within the for loop.

for (int f = 0; f < nm; f++)
array[f] = f+1;

[Zecho]

I recommend you to use the "While loop" . I have code the similar program for factorial but it was in the c programming. The programming logic will remains same for all programming language. So you can use the below "While loop" in your program:

while(z>=1)
{
ft = ft*z;
z = z-1;
}

[Reegan]

c# program for factorial

Class numft
{
Public Static Void Main(String[]as)
{
int a,b,c=1;

Console.Write("Enter Number for factorial");
b=Console.ReadLine();

for(a=1;a<=b;a++)
{

c=c*a;

}

Console.Write("Factorial of number=",c);
}
}
}