Private Sub Command1_Click()

Dim getStr As String

Dim a As String

Dim i As Integer，s As Integer

Dim q As Integer，l As Integer

s=0：q=0：l=0

getStr=Text1.Text

Text2.Text = Str（s）

Text3.Text = Str（q）

Text4.Text = Str（l）

End Sub

注意：⑴其中A+B=C 等式中的“+”“=”需要用去4根火柴。

⑵0+4=4与4+0=4算作一种方案。

例如n=18，符合条件的算式共有5个：0+4=4，0+11=11，1+10=11，2+2=4，2+7=9。

小明设计了一个程序，在Text1中输入火柴数量，单击“计算”按钮，在Label1中输出总的可行方案数，并在List1中输出所有可行的算式。

程序代码如下，加框处代码有误，请修改。

Dim s(0 To 9) As Integer

Private Sub Command1_Click()

 Dim n As Integer, a As Integer, b As Integer, count As Integer

  count=0

  n=Val(Text1.Text)

  For a=0 To 999 Step 1

    For b=a To 999 Step 1

       If   Then   '①{#blank#}1{#/blank#}

        List1.AddItem Str(a)+"+"+Str(b)+"="+Str(a+b)

        count=count+1

      End If

    Next b

  Next a

  Label2.Caption="共"+Str(count)+"种方案"

End Sub

Function gs(ByVal x As Integer) As Integer

  Dim tmp As Integer

  tmp=0

  If x=0 Then tmp=s(0)

  Do While x > 0

         '②{#blank#}2{#/blank#}

    x=x \ 10

  Loop

  gs=tmp

End Function

Private Sub Form_Load()

  s(0)=6: s(1)=2: s(2)=5: s(3)=5: s(4)=4

  s(5)=5: s(6)=6: s(7)=3: s(8)=7: s(9)=6

End Sub

Private Sub Command1_Click()

    Dim c As Integer, n As Integer c = 0 : n = 9

    Do While n <= 1000

        If n Mod 3 = 2 And n Mod 5 = 3 Then

            List1.AddItem Str(n)

            c ={#blank#}1{#/blank#}

        End If

        n ={#blank#}2{#/blank#}

    Loop

    Label1.Caption = "1000 以内满足条件的数有" & Str（c）& "个"

End Sub

请根据算法将下列程序补充完整。

Private Sub Command1_Click()

    Label3.Caption = ""

    For i = 1 To 50

        a(i) ={#blank#}1{#/blank#}

        If i Mod 10 = 0 Then

            Label3.Caption = Label3.Caption + CStr(a(i)) + vbCrLf '换行

        Else

            Label3.Caption = Label3.Caption + CStr(a(i)) + " "

        End If

    Next i

End Sub

Private Sub Command2_Click()

    Label4.Caption = ""

    n = 0

    For i = 1 To 50

        For k = 2 To a(i) - 1

            If {#blank#}2{#/blank#} Then Exit For

        Next k

        If k = a(i) Then

            n = n + 1

        If n = 1 Then b(n) = a(i)

        For j = 1 To n - 1

            If b(j) = a(i) Then{#blank#}3{#/blank#}: Exit For

            If j = n - 1 Then b(n) = a(i)

        Next j

    End If

Next i

For j = 1 To n

    Label4.Caption = Label4.Caption + {#blank#}4{#/blank#}+ " "

Next j

Dim a(1 To 1000) As Integer

Dim n As Integer

Private Sub Form_Load()

'确定n的值和数组a的各个元素值，即每根棍子的长度值，代码略

End Sub

Function max (x As Integer, y As Integer) As Integer

    If x>y Then

        max=x

    Else

        max=y

    End If

End Function

Private Sub Command1_Click()

    Dim i As Integer, J As Integer, K As Integer

    Dim ans As Integer, c As Integer, longest As Integer,

    rest As Integer

    ans=0

    '让i<j<k，保证棍子不会被重复选中

    For i=1 To n

        For j=i+1 To n

            For k=j+1 To n

                c=a(i)+a(j)+a(k)

                longest=      '①

                rest=c-longest        'rest 保存最短的两条边的和

                If Then      '②

                    ans=max(ans, c)

                End If

            Next k

        Next j

    Next i

    Print ans

End Sub