Question

vb.net编程题

用vb.net编写程序段，输入一个字符串，统计其中空格的个数。

Answer 1

Dim a As String
Dim i As Integer
Dim k As Integer
a = Trim（TextBox1.Text）

For i = 0 To a.Length - 1
If mid(a,i,1) = " " Then
k = k + 1
End If
Next
MsgBox("有" & k & "个空格")

Answer 2

Dim a As String
Dim i As Integer
Dim k As Integer
a = TextBox1.Text
For i = 0 To a.Length - 1
If a(i) = " " Then
k = k + 1
End If
Next
MsgBox("有" & k & "个空格")