例: Fraction function

' Print the fractional part of PI
Print Fraction(PI)     ' Prints .141592653589793

'This example shows the relationship between Fix() and Fraction().

' Print PI
Print PI				' Prints 3.14159265358979
' Print the integer part of PI
Print Fix(PI)			' Prints 3
' Print the fractional part of PI
Print Fraction(PI)	' Prints .141592653589793