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  1. Imports System
  2. Public Class Test
  3. Public Shared Sub Main()
  4.  
  5. Console.writeline(frac(5))
  6. End sub
  7.  
  8. Public Shared Function frac(byval n as integer)as long
  9. Dim a as integer = 1
  10. Dim id as integer
  11. For id = 1 to n
  12. a *= id
  13. Next
  14. Return a
  15. End Function
  16. End Class
Success #stdin #stdout 0.07s 13504KB
stdin
Standard input is empty
stdout
120