具體代碼如下：
VB代碼
Private Sub Command1_Click()
Dim W12() '定義陣列
W12 = Array(-0.12634521001675, -4.6694806914686, 0.42026116123439, 5.10867971591759, 1.51942107882065, -0.42243980916051, -1.66877957850959, -0.20468373820466, 0.3572928557475, 0.03610001145893, 4.53787321728016, -0.50977927762321) '權重"
Dim W23() '定義陣列
W23 = Array(-5.89468238932569, 0.11644047624008, -3.94832907664878, -1.76229980989318) '權重
Dim B1()
B1 = Array(-5.96780654305263, -2.33430134475403, -0.773411222728292, 3.4661792485999) '閾值
Const B2 As Double = 3.21772616222852 ' %常量
Dim w1 As Single, w2 As Single, w3 As Single '定義變數 w1 w2 w3
Let w1 = Val(Text1.Text) '獲取測量值
Let w2 = Val(Text2.Text) '獲取比值
Let w3 = Val(Text3.Text) '獲取濃度
Dim a1 As Variant, a2 As Variant, a3 As Variant, a4 As Variant, a11 As Variant, a12 As Variant, a13 As Variant, a14 As Variant '定義變數
a1 = W12(0) * w1 + W12(1) * w2 + W12(2) * w3 + B1(0)
a2 = W12(3) * w1 + W12(4) * w2 + W12(5) * w3 + B1(1)
a3 = W12(6) * w1 + W12(7) * w2 + W12(8) * w3 + B1(2)
a4 = W12(9) * w1 + W12(10) * w2 + W12(11) * w3 + B1(3)
a11 = W23(0) * 1 / (1 + e ^ (-a1)) '
a12 = W23(1) * 1 / (1 + e ^ (-a2)) '
a13 = W23(2) * 1 / (1 + e ^ (-a3)) '
a14 = W23(3) * 1 / (1 + e ^ (-a4)) '
a = a11 + a12 + a13 + a14 + B2 '
Text4.Text = a
End Sub
Private Sub Command2_Click()
Unload Me
End Sub
遇到問題如下：：
游標移動到“a12”位置時，提示“a12”是空值
若是不運行"a12",直接運行“a13”“a14”也同樣是空值。。
請前輩多多指教
uj5u.com熱心網友回復：
有什么沒有定義或者名稱不對找不到uj5u.com熱心網友回復：
你給出的代碼和你圖片里錯誤提示的代碼不一樣啊...uj5u.com熱心網友回復：
恩恩，不論代碼還是報錯截屏都是換湯不換藥。兩者之間差距為是否添加一個中間變數轉載請註明出處，本文鏈接：https://www.uj5u.com/gongcheng/21766.html
標籤：VB基礎類