企源知识库

要想从过程调用后返回一个整数型结果，则下列过程说明正确的是 （ ）
A、Sub f1（Byval x As Single）As Integer
B、Function f2(Byval x As Integer)As Single
C、Sub f3(x As Integer) As Single
D、Function f4(x As Integer) As Integer
【正确答案】：D