老虎咬人的视频播放:VB中 两个字符怎么交换位置?

来源:百度文库 编辑:高考问答 时间:2024/03/30 00:00:05
Private Sub Command1_Click()
Dim a As Single
Dim b As Single
Dim c As Single
a = "ccc"
b = "DDD"
c = a
a = b
b = c
Print a
Print b
End Sub
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这个代码有问题

应该是定义字符行 你一定是打了as空格后就按了一个s就按了空格,所以会是single,下次应该注意的

Dim a As Single
Dim b As Single
Dim c As Single
你定义了浮点形
Dim a As string
Dim b As string
Dim c As string