2.7 - Calculating Factorials

1... The factorial of a number is the product of all of the positive integers from 1 to that number.
For example, the factorial for 3 is 1 * 2 * 3 which is 6.

2... Your task is to complete a factorial program, that will prompt the user for a number, and then
calculate the factorial for that number. A form example is given below (a For Loop might be a good
starting point):