大家好，又见面了，我是你们的朋友全栈君。
代码编写;
Option Base 1
Private Sub Command1_Click()
Dim M As String
Dim N As String
M = Trim(Text1.Text)
N = Trim(Text2.Text)
Dim Number1() As Byte
Dim Number2() As Byte
ReDim Number1(Len(M))
ReDim Number2(Len(N))
Dim index As Byte
For index = 1 To Len(M) Step 1
Number1(index) = Mid(M, index, 1)
Next index
For index = 1 To Len(N) Step 1
Number2(index) = Mid(N, index, 1)
Next index
Dim Result() As Byte
ReDim Result(Len(M) + Len(N))
Dim MCarry As Byte
Dim ACarry As Byte
Dim Remainder As Integer
Dim i As Integer, j As Integer
Dim Mtemp As Integer, Atemp As Integer
For i = Len(N) To 1 Step -1
For j = Len(M) To 1 Step -1
Mtemp = Number1(j) * Number2(i) + MCarry
MCarry = Mtemp \ 10
Remainder = Mtemp Mod 10
Atemp = Remainder + Result(i + j) + ACarry
ACarry = Atemp \ 10
Result(i + j) = Atemp Mod 10
Next j
Result(i) = MCarry + ACarry
MCarry = 0
ACarry = 0
Next i
Dim Mstr As String
For index = 1 To Len(N) + Len(M)
Mstr = Mstr & Str(Result(index))
Next
Label3.Caption = Mstr
End Sub
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