رʽ˱ʽѱתΪ Double ͵ Variant

CDbl(expression)
expression Чıʽ

˵
ͨʹתд룬ʾĳЩĽӦΪضͣĬϵ͡ڳֻһ£ʹ CDbl  CSng ǿƽ˫Ȼ򵥾㡣

CDbl ڽд͵ Double ͵Ĺʹϵĸʽת磬ʮƷָǧλָʶȡϵͳá

ʾ CDbl  expression תΪ Double

Dim MyCurr, MyDouble
MyCurr = CCur(234.456784)               ' MyCurr  Currency  (234.4567)
MyDouble = CDbl(MyCurr * 8.2 * 0.01)    ' ѽתΪ Double  (19.2254576)
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