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BASIC Source File  |  1988-09-17  |  270 b   |  15 lines
  1. '
  2. ' *** DEFFN_EX.BAS - DEF FN function programming example
  3. '
  4. DEF FNFactorial#(X)
  5.    STATIC Tmp#, I
  6.    Tmp#=1
  7.    FOR I=2 TO X
  8.       Tmp#=Tmp#*I
  9.    NEXT I
  10.    FNFactorial#=Tmp#
  11. END DEF
  12.  
  13. INPUT "Enter a number: ",Num
  14. PRINT Num "factorial is" FNFactorial#(Num)
  15.