Question

vb中显示“下标越界”是什么意思？为什么我这个程序总会显示下标越界？谢谢

当j=10时，a(j + 1)=a(11)，这就超出数组a的下标范围了，所以提示你“下标越界”。应该把排序的代码改为：
Private Sub Command2_Click()
Print "排序后："
For i = 1 To 9
For j = i + 1 To 10
If a(i) < a(j) Then
t = a(i)
a(i) = a(j)
a(j) = t
End If
Next j
Next i
For i = 1 To 10
Print a(i);
Next i
End Sub

Answer 1

当j=10时，a(j + 1)=a(11)，这就超出数组a的下标范围了，所以提示你“下标越界”。应该把排序的代码改为：
Private Sub Command2_Click()
Print "排序后："
For i = 1 To 9
For j = i + 1 To 10
If a(i) < a(j) Then
t = a(i)
a(i) = a(j)
a(j) = t
End If
Next j
Next i
For i = 1 To 10
Print a(i);
Next i
End Sub