DEF FN Statement Programming Example
 
DEFFN_EX.BAS is a program file in the subdirectory ADVR_EX that illustrates
the DEF FN statement. To look at the program in the View window and,
optionally, to run it, load the program using the File menu's Open Program
command.
 
The program uses a DEF FN function to calculate the factorial of an input
number (for example, the factorial of 3 is 3*2*1).