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补充代码
本程序的功能是在二维数组中查找鞍点元素，即该元素在所在行中为最大，且在所在列中为最小。在一个数组中可能存在，也可能不存在这样的元素。数组各元素的值从文件data.txt中读取。
以下是片段：
Private Sub Form_Click()
Dim a(3,3) As Integer,i As Integer,j As Integer
Dim maxvr As Integer,col As Integer, As Integer
Open data.txt For Input As #1
For i=1 To 3
For j=1 To 3
Input #1,a(i,j)
Print a(i,j);
Next j
Print
Next i
For i=1 To 3
maxvr= (1)
col=1
For j=2 To 3
If maxvr
maxvr= (2)
col=j
End If
Next j
For j=1 To 3
If maxvr>a(j,col) Then (3)
Next j
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