举一反三
- 下列程序段的执行结果为 _______。 Dim a(3, 5) As Integer Dim i As Integer, j As Integer For i = 1 To 3 For j = 1 To 5 a(i, j) = a(i - 1, j - 1) + (i - 1) * 5 + j Next j Next i Print a(3, 4)
- 下列程序中 s = s + j 语句共执行了______次。 Dim s As Integer Dim i As Integer, j As Integer For i = 1 To 10 Step 2 For j = 1 To 5 Step 2 s = s + j Next j Next i Print s
- 下列程序的运行结果为（ ）。 Private Sub Command1_Click() Dim a(5) As String Dim i As Integer For i = 0 To 5 a(i) = i + 1 Print a(i); Next i End Sub
- 下列程序: Option Base 1 Private Sub Form_Click() Dim a(5，5) For i ＝ 1 To 5 For j ＝ 1 To 5 k ＝ k ＋ 1 a (i，j)＝ k Next j Next i For i ＝ 1 To 5 s ＝ s ＋ a (i，i) Next i Print s End Sub 运行时的输出结果是( )。
- 以下代码段的运行结果是。 boolean flag = false; if (flag = true) { System.out.println("true"); } else { System.out.println("false"); }
内容
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下面程序运行后，语句“Print i”执行的次数是( )。 Private Sub Form_Click() Dim i As Integer,j As Integer i=0 Do i=i+1 Forj=10 To 1 Step-3 i=i+j Print i Next j Loop While i<50 End Sub A: 4 B: 8 C: 12 D: 16
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以下程序的运行结果是 Sub s1(b() As Integer) For i = 1 To 4 b(i) = 2 * i Next i End Sub Private Sub Command1_Click() Dim a(1 To 4) As Integer For i = 1 To 4 a(i) = i + 5 Next i s1 a() For i = 1 To 4 Print a(i) Next i End Sub
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运行下面的程序，第二行显示结果是___________。 Private Sub Form_Click() Dim A As Integer Dim i As Integer A = 5 For i = 1 To 9 Call sub1(i, A) Print i, A Next i End Sub Private Sub sub1(x As Integer, y As Integer) Static N As Integer Dim I As Integer For I = 3 To 1 Step -1 N = N + x x = x + 2 Next I y = y + N End Sub
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执行以下程序，单击命令按钮后，输出结果是______。 Private Sub Command1_Click() Dim a(5) As Integer Dim b For i = 1 To 5 a(i) = i*i Next i For Each b In a Print b; Next b End Sub
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判断一个数是否为素数。并显示相应提示。如：该数为素数时，显示"素数"；该数为非素数时，显示"非素数"。要求使用For语句来实现，用布尔型变量flag作为该数是否为素数的标志，注意：不得使用Goto语句. Private Sub Command1_Click() Dim flag As Boolean , m As Integer m = Val(InputBox("n:")) flag = True For i = 2 To m - 1 If m Mod i = 0 Then 【1】 : Exit For Next i If flag = True Then Print "素数" Else Print "非素数" End If End Sub