[填空题] 设有以下函数过程： Functiofun(m As Integer)As Integer Dimk As Integer,sum As Integer sum=0 Fork=

[填空题] 设有以下函数过程：

Functiofun(m As Integer)As Integer

Dimk As Integer,sum As Integer

sum=0

Fork=m To 1 Step-2

sum=sum+k

Nextk

fun=sum

End Function

若在程序中用语句s=fun(10)调用此函数，则s的值为______。