【单选题】某人编写了下面的程序 Private Sub Command1_Click( ) Dim a As Integer, b As Integer a = InputBox("请输入整数") : b = InputBox("请输入整数") pro a : pro b Call pro(a + b) End Sub Private Sub pro(n As Integer) While (n > 0) ...
A.
把过程pro 的形式参数 n As Integer 改为 ByVal n As Integer
B.
把Call pro(a + b) 改为 pro a + b
C.
把n = n \ 10 改为 n = n / 10
D.
在pro b语句之后增加语句 c%=a+b ,再把 Call pro(a + b) 改为 pro c