# Write a VB(visual basic 6.0) program to find factorial number

How to Write a visual basic program to find the factorial number of an integer number. Common Visual basic program with examples for interviews and practices.

**We can find the factorial of any number which is greater than or equal to 0(Zero). Below is the Program to write a factorial program in Visual basic. Check the simple programs in visual basic.**

**What is Factorial Number**

Factorial Number is a mathematical operation on a number. The factorial symbolized by an exclamation mark **! Example 5!. **We can fina the factorial any positive number or number which is greater or equal to Zero.

**Mathematical Formula to find factorial number**

If n is an integer number then and n is greater than or equal to Zero then factorial of n is

n ! = n ( n – 1)( n – 2)( n – 3) … (3)(2)(1)

**Note: Factorial of zero always will be 1.**

**Example:** Let’s understand it by an example. Here we will find the factorial of 6.

6! = 6*5*4*3*2*1

6!= 720 Ans.

Now hope you understand what is a factorial number and how can we find the factorial of a number using a mathematical formula. Now let’s see how can we covert the same problem in the visual basic program.

**How to Find factorial number in visual basic**

Private Sub Command1_Click() Dim j, i as Integer i = CInt(Text1.Text) Label2.Caption = facts(i) End Sub Private Function facts(i) F = 1 For j = 1 To i F = F * j facts = F Next j End Function