VB程序设计实验教程与习题选解(中国铁道出版社)

B B C C D B B B C C C A B B C
31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45.
B C B B D B D D B A B A B B D
二、填空题
1． Is=0 ; 1 To 10 ; Is >10
List1.AddItem "ABCRG" >= "abcde"
List1.AddItem Int(134.69) >= CInt(134.9)
List1.AddItem 78.9 / 32.77 <= 97.5 / 43.87 And -45.4 > -4.98
List1.AddItem Str(32.345) = CStr(32.345)
If n = vbOK Then Label1.Caption = "金额：" & Str(je) & "元"
End Sub
‘产生随机数
Private Sub Command2_Click()
Dim m As Integer, n As Integer
Dim x1 As Integer, x2 As Integer, x3 As Integer
Dim V0 As Single, t As Single
Dim S As Single
V0 = InputBox("请输入V0的值：")
t = InputBox("请输入时间t的值：")
S = (1 / 2) * g * t ^ 2 + V0 * t
习题
一、选择题
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
C B C A A B B B C C B B D A B
16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30.
List1.AddItem C1 + C2 + C3 >= 255 Or C1 > 90 And C2 > 90 And C3 > 80
End Sub
实验3_2
略
实验3_3
略
实验3_4
‘零售结算
Private Sub Command1_Click()
Dim dj As Single, sl As Single, je As Single, n As Integer
End Sub
实验3_5
略
习题
选择题
1-20: DBBDB DDBCA DDDCD DBADB
21-40: DCDAA B_ACA BCADA B_BCD
41-60: BCBDC CADBA CBDDD ABAAA
61-80:BBCAB BDAAA CBBDD CBDAD
10、EDEF
11、(A>0 And A<>Int(A)) And (B<0 And B<>Int(B))
12、a+b+c+d
(a+b+c+d)/4
sum
aver
13、(f-2*h)/2
(4*h-f)/2
简答题
1、略
2、Private Sub Form_Click()
Const g = 9.8
x = 9: y = -2
List1.Clear
List1.AddItem x + y < 10 And x - y > 0
List1.AddItem (x% >= 0 And y% >= 0) Or (x% < 0 And y% < 0)
List1.AddItem x = 0 Xor y = 0
68.56
876554
7、a=1 b=1
a=2 b=1
a=3 b=1
a=4 b=1
8、Y Mod 4=0 And Y Mod 100<>0 Or Y Mod 400 =0
9、He Said, “Good morning”.
List1.AddItem Abs((Exp(x) + Sin(x) ^ 3) / (x + y))
List1.AddItem Log((Exp(x * y) + Abs(1 / Tan(z) + Cos(x) ^ 3)) / (x + y - z))
List1.AddItem Sin(45 * 3.1415 / 180) + (Exp(10) + Log(10)) / Sqr(x + y + 1)
实验4-2
Shape1.BackColor=vbRed;
Inter=15;
Inter=Inter-1;
Inter;
实验4-3
b<c
b=a
a=k
实验4-4
方法二： s*n ; t/s<10^-5
实验4-5
方法一:m>=10^-4 ; (-1)^(n+1)*m
m = Val(Text1.Text): n = Text2.Text
Randomize
x1 = Int(Rnd * (n - m + 1) + m)
x2 = Int(Rnd * (n - m + 1) + m)
x3 = Int(Rnd * (n - m + 1) + m)
Label4.Caption = "结果为：" & Str(x1) & Str(x2) & Str(x3)
End Sub
‘求逆序数
Private Sub Command3_Click()
Dim a As Integer, h As Integer, t As Integer, n As Integer
End Sub
‘逻辑运算
Private Sub Command3_Click()
Dim x As Integer, y As Integer
Dim C1 As Integer, C2 As Integer, C3 As Integer
C1 = 70: C2 = 80: C3 = 90
B
第三章实验与习题
实验
实验3_1
‘算术运算
Private Sub Command1_Click()
Const a As Single = 3, b As Single = 2, c As Single = -1, d As Single = 6
第一章 VB开发环境与VB概述 习题答案
习题
一、选择题
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
B A A B D B A A C B C D A D
第二章 常用控件与界面设计 习题答案
46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60.
A A B D C D D C D D C A C C B
61.
Randomize
a = Int(Rnd * (999 - 100 + 1) + 100)
h = Mid(CStr(a), 1, 1)
t = Mid(CStr(a), 2, 1)
n = Right(CStr(a), 1)
Label5.Caption = a & "-->" & Format(n * 100 + t * 10 + h, "000")
c>=”a” And c<=”z” Or c>=”A” And c<=”Z”
x>=10 And x<20
x<z Xor y<z
5、False
2
True
False
True
True
True
True
6、188
200100
81-89:CBDBB BADC
填空题
1、2 -32768~32767
2、整型 长整型 单精度 双精度
3、0 False “”
4、Chr(Int(Rnd*(Asc(“L”)-Asc(“C”))+Asc(“C”)))
x>0 And y>0 Or x<0 And y<0
List1.AddItem Log(a) / Log(b)
End Sub
‘关系运算
Private Sub Command2_Clickห้องสมุดไป่ตู้)
List1.Clear
List1.AddItem Mid("Visual Basic", 1, 12) = Right("Language Visual Basic", 12)
实验4-11
Len(st); Ch=Lcase(ch) ; Case Else ; Mid(Char,I,1)&St
实验4-12
i\100 ; (i Mod 100)\10