vb 加法 1+2=12？？？

显示全部楼层 · 2010-3-3 20:50:32

Dim g as single, f As Single
g = val(TextBox4.Text)
f = val(TextBox5.Text)
If RadioButton1.Checked = True Then
TextBox6.Text = g + f

千问 · 2010-3-3 20:50:32

因为你的g和f是字串字串相加g+f=gf所以你要把g和f前面加val把g和f改为数值数值相加g+f=g+f变成这样Textbox6.text = val(g)+val(f)这样 textbox6 的输出值就会变成3

千问 · 2010-3-3 20:50:32

g与f为字符串，此时+号为字符串连接，所以结果当然为12了。你首先得将g与f转化成整数，然后将运算结果转换成字符串赋与textbox6.text

千问 · 2010-3-3 20:50:32

Dim g, f As String
g = csng(TextBox4.Text)
f = csng(TextBox5.Text)
If RadioButton1.Checked = True Then TextBox6.Text = g + f

千问 · 2010-3-3 20:50:32

g = TextBox4.Text
f = TextBox5.Text
If RadioButton1.Checked = True Then
TextBox6.Text =val(g) + val(f)