(完整word)VB程序设计编程考试题及答案,推荐文档

VB程序设计编程考试题及答案

1. 输入3个数，输出最大的数

Private Sub command1_click() Dim max For i = 1 To 3

n = Val(InputBox(\输入第\个数\If n > max Then max = n End If Next

Print \三个数中最大的数是\End Sub

2. 有一元二次方程：aX2+bX+c=0，依次输入a，b，c，判断此方程是否有实根

Private Sub Command1_Click() Dim a, b, c, n a = Text1 b = Text2 c = Text3

n = b * b - 4 * a * c If n >= 0 Then

Label4 = \方程有根\ Else

Label4 = \方程无根\End If End Sub

3. 输入一个百分制的成绩，若大于等于60，则用消息框弹出，显示“恭喜！成绩通过！”，

若小于60，则弹出消息框，显示“抱歉！成绩没有通过！ Private Sub Form_Load() Text1 = \End Sub

Private Sub Command1_Click() Dim n n = Text1

If n > =60 Then

Val (MsgBox(\恭喜！成绩通过！\Else

Val (MsgBox(\抱歉！成绩没有通过！\End If End Sub

4. 输入一年份，判断它是否为闰年，并显示有关信息。（判断闰年的条件是：年份能被4整

除但不能被100整除，或者能被400整除）

Private Sub Command1_Click() Dim y%

y = InputBox(\请输入年份\

If y Mod 4 = 0 And y Mod 100 <> 0 Or y Mod 400 = 0 Then Val (MsgBox(\闰年！\Else

Val (MsgBox(\平年！\End If End Sub

5. 输入学生的百分制成绩，转换输出为五级制成绩，90～100分转换为优秀，80～89转换

为良好，70～79转换为中等，60～69转换为及格，0～60转换为不及格。

Private Sub Command1_Click() a = Val(InputBox(\请输入成绩\If a > 100 Then Print \超出范围\

If a >= 90 And a <= 100 Then Print \优秀\If a >= 80 And a < 90 Then Print \良好\If a >= 70 And a < 80 Then Print \中等\If a >= 60 And a < 70 Then Print \及格\If a < 60 Then Print \不及格\End Sub

6. 随机产生一个三位正整数，然后逆序输出，产生的数与逆序数同时显示。例如，产生246，

输出是642。

Private Sub Command1_Click() Dim x%, x1%, x2%, x3% x = Text1

x1 = x Mod 10

x2 = (x Mod 100) \\ 10 x3 = x \\ 100

Label1 = x1 * 100 + x2 * 10 + x3 End Sub

7. 输入两个整数，求它们的最大公约数。

private Sub Command1_Click() n1 = InputBox(\输入n\ m1 = InputBox(\输入m\ If m1 > n1 Then

m = m1: n = n1 Else

m = n1: n = m1

End If

r = m Mod n Do While r <> 0 m = n n = r

r = m Mod n Loop

Print \的最大公约数是：\End Sub

8. 编程求200--400范围内5的倍数或7的倍数之和。(一个数如果同时是7和5的倍数，则

只能加一次。。

Private Sub Command1_Click() For i = 200 To 400

If i Mod 5 = 0 Or i Mod 7 = 0 Then Sum = Sum + i End If Next i

For i = 200 To 400

If i Mod 5 = 0 And i Mod 7 = 0 Then Sum = Sum - i End If Next i

Print “倍数之和=”; Sum End Sub

9. 计算100~300之间所有能被3和7整除的数之和

Private Sub Command1_Click() Dim i Sum = 0

For i = 100 To 300

If i Mod 3 = 0 And i Mod 7 = 0 Then Sum = Sum + i End If Next i Print Sum End Sub

10. 分别统计1-100中，满足3的倍数、7的倍数的数各有多少。

Private Sub Command1_Click() Dim i, s3, s7 s3 = 0 s7 = 0

For i = 1 To 100

If i Mod 3 = 0 Then s3 = s3 + 1 End If Next i

For i = 1 To 100 If i Mod 7 = 0 Then s7 = s7 + 1 End If Next i

Print \的倍数\Print \的倍数\End Sub

11. 某次歌曲大奖赛，有7个评委。如果分别输入7个评委对某个参赛者的打分数，按照去

掉一个最高分和一个最低分的计算办法，求出该参赛者的平均得分。 Private Sub Command1_Click() Dim max, a(1 To 7), min, s For i = 1 To 7

a(i) = Val(InputBox(\输入第\个数\Next i max = a(1) min = a(1) s = a(1)

For i = 2 To 7

If a(i) > max Then max = a(i) If a(i) < min Then min = a(i) s = s + a(i) Next i

s = s - min - max s = s / 5

Print \平均分\End Sub

12. 输入一串字符，统计其中字母A(不区分大小写)出现的次数。

Private Sub Command1_Click() Dim c As String, a As Integer b = InputBox(\请输入字符\For i = 1 To Len(b)

c = UCase(Mid(b, i, 1)) If c = \ a = a + 1 End If Next i

Print \出现的次数：\End Sub