单项选择题在窗体上画一个命令按钮,然后编写下列程序: Private Sub Command1 click( ) Dim a As Single,b As Single a=6:b=2 RC a,b Print a,b End Sub Sub RC(x As Single,y As Single) i=x x=i y y=i Mod y End Sub
单项选择题表达式x=Sqr(a^2-5)+sqr(b^2-5)的类型是