全国计算机二级考试VB程序设计复习试题答案(13)

全国等级考试资料网 2019-01-17 02:43:23 246

1. 在窗体上画一个名称为Command1的命令按钮,然后编写如下事件过程:

Private Sub Command1_Click()

Dim num As Integer

num = 1

Do Until num > 6

Print num;

num = num + 2.4

Loop

End Sub

程序运行后,单击命令按钮,则窗体上显示的内容是

(A)1  3.4  5.8 (B)1  3  5(C)1  4  7(D)无数据输出

2. 有如下函数:

Function Facn ( x As Integer ) As Long

 Dim p As Long , i As Integer

 p = 1

 For i = 1 To x

p = p * i

 Next i

 Facn = p

End Function

 调用它的事件过程如下:

Private Sub Command1_Click ( )

 i = Val ( InputBox ( “请输入数据”))

 a = Facn (( i ) )                ‘实参i用圆括号括起,则强制为值传递

 Print a

End Sub

 若输入数据6,则程序运行结果为( 【73】 )

 (A)60 (B)120 (C)600 (D)720

3. 在窗体上画一个名称为Command1的命令按钮,然后编写如下事件过程:

Private Sub Command1_Click()

Dim a As Integer, s As Integer

a = 8

s = 1

Do

s = s + a

a = a-1

Loop While a <= 0

Print s; a

End Sub

程序运行后,单击命令按钮,则窗体上显示的内容是

(A) 7  9      (B) 34  0      (C) 9  7      (D)死循环

4. 下列程序的执行结果为( 【74】 )

 Dim IntSum As Integer , i As Integer

 IntSum = 0

 For i = 30.2 To 1 Step -5.3

IntSum = IntSum + i

 Next i

 Print IntSum

 (A)106(B)105(C)102(D)101

5. 在窗体上画一个命令按钮,然后编写如下事件过程,该过程执行结果为( 【75】 )

Option Base 1

Private Sub Command1_Click ( )

 Dim a As Variant , s As Integer

 a = Array ( 2 , 4 , 6 , 8 )

 j = 1

 For i = 1 To 4 Step 1

s = s + a ( i ) * j

j = j *10

 Next i

 Print s

End Sub

 (A)0(B)1110(C)2468(D)8642

设有如下通用过程:

Public Function f(x As Integer)

Dim y As Integer

x = 20

y = 2

f = x * y

End Function

6. 在窗体上画一个名称为Command1的命令按钮,然后编写如下事件过程:

Private Sub Command1_Click()

Static x As Integer

x = 10

y=5

y = f(x)

Print x; y

End Sub

程序运行后,如果单击命令按钮,则在窗体上显示的内容是

(A)10  5  (B)20  5 (C)20  40  (D)10 40

7. 对窗体编写如下代码:

Option Base 1

Private Sub Form_KeyPress( KeyAscii As Integer)

 a = Array (123 , 86 , 57 , 248 , 32)

 m1 = a ( 1 )

 m2 = 1

 If KeyAscii = 13 Then

For i=2 To 5

 If a ( i ) > m1 Then

m1 = a ( i )

m2 = i

 End If

Next i

 End If

 Print m1 , m2

End Sub

 程序运行后,按回车键,输出结果为( 【76】 )

 (A)32  5 (B)248  4 (C)32  1 (D)248  5

设有如下通用过程:

Public Sub Fun(a(), ByVal x As Integer)

For i = 1 To 5

x = x + a(i)

Next

End Sub

8. 在窗体上画一个名称为Text1的文本框和一个名称为Command1的命令按钮,然后编写如下的事件过程:

Private Sub Command1_Click()

Dim arr(5) As Variant

For i = 1 To 5

arr(i) = i

Next

n = 10

Call Fun(arr(), n)

Text1.Text = n

End Sub

程序运行后,单击命令按钮,则在文本框中显示的内容是

(A)10 (B)15  (C)25  (D)24

9. 阅读程序:

Function Func ( a As Integer )

 b = 1

 Static c As Integer

 b = b +1

 c = c +1

 Func = a + b + c

End Function

Private Sub Command1_Click( )

 Dim a As Integer

 a = 3

 For i =1 to 3

Print Func( a )

 Next i

End Sub

 运行上面的程序,单击命令按钮后,输出结果为( 【77】 )

 (A)6    (B)6   (C)6             (D)6

  7               6               8                  13

       8               6               10                 21

10.   在窗体上画一个名称为Command1的命令按钮,然后编写如下代码:

Option Base 1

Private Sub Command1_Click()

d = 0

c = 10

x = Array(10, 12, 21, 32, 24)

For i = 1 To 5

If x(i) > c Then

d = d + x(i)

c = x(i)

Else

d = d-c

End If

Next i

Print d

End Sub

程序运行后,如果单击命令按钮,则在窗体上输出的内容为

(A)89 (B)99 (C)23 (D)77

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