哪位高手可以给写一个简单点的VB程序源码,类似于写一个计算器、查分系统或者是其他的简单点的程序!

期末交一个作业,老师会问之中的问题,所以写的时候最好不要太难,但是又是作业太简单也不行!
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二、输入学号然后点查询输出学生的简单信息
我邮箱[email protected]!

这是一个简易的计算器  希望对你有帮助

Dim a, b, c As String     '这是在通用中进行的变量定义

Private Sub Command1_Click()   '这是在+的按钮里编写的代码

Label1.Caption = "+"

c = a + b

Text3.Text = Str(c)

Command1.Enabled = False

End Sub

Private Sub Command2_Click()     '这是在-的按钮里编写的代码

Label1.Caption = "-"

c = a - b

Text3.Text = Str(c)

Command2.Enabled = False

End Sub

Private Sub Command3_Click()      '这是在乘的按钮后面编写的代码

Label1.Caption = "*"

c = a * b

Text3.Text = Str(c)

Command3.Enabled = False

End Sub

Private Sub Command4_Click()     '这是在除的按钮后面编写的代码

On Error GoTo err1

Label1.Caption = "/"

c = a / b

Text3.Text = Str(c)

Command4.Enabled = False

Exit Sub

err1:

MsgBox "除数不能为零"

Command4.Enabled = False

End Sub

Private Sub Command5_Click()       '这是在开始按钮里编写的代码 

a = Val(Text1.Text)

b = Val(Text2.Text)

Command1.Enabled = True

Command2.Enabled = True

Command3.Enabled = True

Command4.Enabled = True

End Sub

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第1个回答  2010-12-08
以前找的,你凑合着用

1.求三角形的面积代码:
Option Explicit
Dim a!,b!,c!r,!,s!
Private Sub Command1_Click()
a = InputBox("a=", "请输入a的数值")
b = InputBox("b=", "请输入b的数值")
c = InputBox("c=", "请输入c的数值")
If a + b > c And a + c > b And b + c > a And a > 0 And b > 0 And c > 0 Then
r = 1 / 2 * (a + b + c)
s = Sqr(r * (r - a) * (r - b) * (r - c))
Label1.Caption = "三角形的面积为" & s
Else
Label2.Caption = "输入的数据不能构成三角形"
End If
End Sub
2.三个数排列代码:
Option Explicit
Dim x!, y!, z!, t!
Private Sub Command1_Click()
x = InputBox("输入第一个数 x")
y = InputBox("输入第二个数 y")
z = InputBox("输入第三个数 z")
Print "排序前"; x & " " & y & " " & z
If x < y Then t = x: x = y: y = t
If y < z Then
t = y: y = z: z = t
If x < y Then
t = x: x = y: y = t
End If
End If
Print "排序后"; z & " " & y & " " & x
End Sub
3.计算一元二次方程 的代码:
Option Explicit
Dim a!,b!,c!,d!,x1!,x2!
Private Sub Command1_Click()
a = InputBox("a=", "请输入一元二次方程的系数a")
b = InputBox("b=", "请输入一元二次方程的系数b")
c = InputBox("c=", "请输入一元二次方程的系数c")
If a = 0 Then
Print "因为a≠0,你输入的a=0,请重新输入系数a"
End If
d = b ^ 2 - 4 * a * c
If d >= 0 Then
x1 = (-b + Sqr(d)) / (2 * a)
x2 = (-b - Sqr(d)) / (2 * a)
Print "系数为" & a; b; c & "的一元二次方程的根分别为" & "x1=" & x1 & " " & "x2=" & x2
Else
Print "此方程在实数范围内无解"
End If
End Sub
4.利用Select Case语句输入年份计算属相代码:
Option Explicit
Private Sub Command1_Click()
Dim i As Integer, x As String, Y As Integer
Y = InputBox("输入你的出生年份Y")
i = Y Mod 12
Select Case i
Case Is = 0
x = "猴"
Case Is = 1
x = "鸡"
Case Is = 2
x = "狗"
Case Is = 3
x = "猪"
Case Is = 4
x = "鼠"
Case Is = 5
x = "牛"
Case Is = 6
x = "虎"
Case Is = 7
x = "兔"
Case Is = 8
x = "龙"
Case Is = 9
x = "蛇"
Case Is = 10
x = "马"
Case Is = 11
x = "羊"
End Select
Print x
End Sub
5.闰年两种判断方法的代码;
方法一:Option Explicit
Dim y As Integer
Private Sub Command1_Click()
y = InputBox("y=", "输入年份")
If y Mod 4 = 0 Then
If y Mod 100 = 0 Then
If y Mod 400 = 0 Then
Print "这年为闰年"
Else
Print "这年为平年"
End If
Else
Print "这年为闰年"
End If
Else
Print "这年为平年"
End If
End Sub
方法二:Private Sub Command2_Click()
y = InputBox("y=", "输入年份")
If y Mod 4 = 0 And y Mod 100 = 0 Then
Print "这年为闰年"
ElseIf y Mod 400 = 0 Then
Print "这年为闰年"
Else
Print "这年为平年"
End If
End Sub
6.三种方法计算下式 的代码:
法一:Option Explicit
Dim x!,y!
Private Sub Command1_Click()
x = InputBox("x=", "输入x的值")
If x <> 0 Then
If x >= 1 Or x <= -1 Then
y = (1 + Sin(x) * Sin(x) - Sqr(x ^ 2 - 1)) / x
Print "y="; Format(y, "0.0000")
Else
Print "所输入的x不在定义域"
End If
Else
Print "除数不能为零"
End If
End Sub
法二:Private Sub Command2_Click()
x = InputBox("x=", "输入x的值")
Select Case x
Case Is = 0
Print "除数不能为零"
Case Is >= 1, Is <= -1
y = (1 + Sin(x) * Sin(x) - Sqr(x ^ 2 - 1)) / x
Print "y="; Format(y, "0.0000")
Case Is <> 0, Is < 1, Is > -1
Print "所输入的x不在定义域"
End Select
End Sub

法三:Private Sub Command3_Click()
x = InputBox("x=", "输入x的值")
If x >= 1 Then
y = (1 + Sin(x) * Sin(x) - Sqr(x ^ 2 - 1)) / x
Print "y="; Format(y, "0.0000")
ElseIf x < 1 And x > 0 Then
Print "所输入的x不在定义域"
ElseIf x = 0 Then
Print "除数不能为零"
ElseIf x >= -1 And x < 0 Then
Print "所输入的x不在定义域"
ElseIf x <= -1 Then
y = (1 + Sin(x) * Sin(x) - Sqr(x ^ 2 - 1)) / x
Print "y="; Format(y, "0.0000")
End If
End Sub
流程图:

伪代码:
step1:输入x的值;
step2:判断x是否为零;
step3:若x=0,输出“除数不能为零”;若x不为零,则继续判断x的绝对值是否大于1;
step4:若x的绝对值是否大于1,输出y的值;否则x的值不在函数的定义域里,结束。

7. 利用For……Next循环计算1+2+3+4+……+n。
Option Explicit
Dim i%,j%,n%
Private Sub Command1_Click()
j = 0
n = InputBox("输入的n值")
For i = 1 To n
j = j + i
Next i
Print j
End Sub
8. 编写利用辗转相除法及辗转相减法计算公约数的代码
(1)辗转相减法
Private Sub Command10_Click()
Dim m As Long, n As Long, m1 As Long, n1 As Long, r As Long, t As Long
m1 = InputBox("输入m1", "求最大公约数和最小公倍数")
n1 = InputBox("输入n1", "求最大公约数和最小公倍数")
m = m1
n = n1
Do
If n > m Then
t = m
m = n
n = t
End If
r = m - n
If r = 0 Then Exit Do
m = n
n = r
Loop Until r = 0
Print m1 & "," & n1 & "的最大公约数是" & m
Print m1 & "," & n1 & "的最小公倍数是" & m1 * n1 / m
End Sub
(2)辗转相除法
Private Sub Command9_Click()
Dim n%, m%, r%, m1%, n1%
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 m1; ","; n1; "的最大公约数"; n
Print m1; ","; n1; "最小公倍数"; m1 * n1 / n
End Sub
9. 输出一列“*”,一行“*”。
Private Sub Command2_Click()
For i = 1 To 8
Print "*"
Next i
Print
End Sub
Private Sub Command3_Click()
For i = 1 To 8
Print "*";
Next i
Print
End Sub
10. 一张若干大面积的纸厚0.1mm,将其对折一次厚0.2mm,再对折一次厚0.4mm,如果对折了40次,问厚度是多少?
Private Sub Command4_Click()
Dim s As!,ss!
n = InputBox("输入的n值")
For i = 1 To n
s = 0.1 * 2 ^ n
ss = s * 0.001
Next i
Print "ss=" & Format(ss, "0.0000") & "米"
End Sub
11. 一个球自100m处高度自由落下,每次落地后反跳到原高度一半,然后再落下。求它在第10次落地时,共经过多少m?第10次反弹多高?
Private Sub Command5_Click()
Dim i%, s!, h!
h = 50
s = 100
i = 2
Do Until i > 10
s = s + h * 2
h = h / 2
i = i + 1
Loop
Print "十次落地经过的路程s=" & s; "米", "第十次落地反弹的高度h=" & h; "米"
End Sub
12. 猴子吃桃问题。猴子第一天摘下若干个桃子,当即吃了一半又多吃一个。第二天双将剩下的吃了一半,又多吃一个,以后每天都吃前一天剩下的一半零一个。到第十天只有一个桃子。问第一天共摘了多少个桃子。
Private Sub Command6_Click()
Dim i%, x1%, x2%
x1 = 1
x2 = 0
i = 1
Do Until i > 9
x2 = (x1 + 1) * 2
x1 = x2
i = i + 1
Loop
Print "总桃数为" & x2
End Sub
13. 利用自然对数e的近似值,近似公式为:
e=1+1/1!+1/2!+1/3!+…+1/n!+ …
(1)求其误差小于0.00001时的值;
(2)计算到第10项。
(1)Private Sub Command7_Click()
Dim s!, e!, i%
i = 1
s = 1
e = 1
Do Until i > 9
s = s / i
e = e + s
i = i + 1
Loop
Print "e=" & e
End Sub

(2)Private Sub Command8_Click()
Dim i%, t&, e!
i = 0
e = 0
t = 1
Do While 1 / t > 0.00001
e = e + 1 / t
i = i + 1
t = t * i
Loop
Print "e="; e
End Sub
14.以单重循环及三重循环找到100到999之间所有的水仙花数;
单重循环:Option Explicit
Private Sub Command1_Click()
Dim a%, b%, c%, i%
For i = 100 To 999
a = i Mod 10: b = (i Mod 100) \ 10: c = i \ 100
If i = a ^ 3 + b ^ 3 + c ^ 3 Then
Print i
End If
Next i
End Sub
三重循环:Private Sub Command2_Click()
Dim a%, b%, c%
For a = 1 To 9
For b = 0 To 9
For c = 0 To 9
If a ^ 3 + b ^ 3 + c ^ 3 = a * 100 + b * 10 + c Then
Print a * 100 + b * 10 + c
End If
Next c
Next b
Next a
End Sub
15.在百钱买百鸡的基础上,练习兑换零钱;
Option Explicit
Dim a%, b%, c%, d%, e%, f%, m!, n%
Private Sub Command1_Click()
n = 0
m = 0
For a = 0 To 2
For b = 0 To (100 - 50 * a) / 20
For c = 0 To (100 - 50 * a - 20 * b) \ 10
For d = 0 To (100 - 50 * a - 20 * b - 10 * c) \ 5
For e = 0 To (100 - 50 * a - 20 * b - 10 * c - 5 * d) \ 2
For f = 0 To 100 - 50 * a - 20 * b - 10 * c - 5 * d - 2 * e
If a * 50 + b * 20 + c * 10 + d * 5 + e * 2 + f = 100 Then
n = n + 1
End If
m = m + 1
Next f
Next e
Next d
Next c
Next b
Next a
Label1.Caption = "总共有" & n & "种方法。" & " " & "共计算了" & m & "次。"
End Sub
Private Sub Command2_Click()
n = 0
m = 0
For a = 0 To 2
For b = 0 To (100 - 50 * a) / 20
For c = 0 To (100 - 50 * a - 20 * b) \ 10
For d = 0 To (100 - 50 * a - 20 * b - 10 * c) \ 5
For e = 0 To (100 - 50 * a - 20 * b - 10 * c - 5 * d) \ 2
n = n + 1
m = m + 1
Next e
Next d
Next c
Next b
Next a
Label1.Caption = "总共有" & n & "种方法。" & " " & "共计算了" & m & "次。"

End Sub
16输入一个数,判断该数是否为素数。
Option Explicit
Private Sub Command1_Click()
Dim n!, j!
n = Val(Text1)
j = 2
Do While j <= Sqr(n) And n Mod j <> 0
j = j + 1
Loop
If j > Sqr(n) Then
Print n; "是素数"
Else
Print n; "是合数"
End If
End Sub
17.求100~200之间所有的素数。
Option Explicit
Dim i%, j%, c%
Private Sub Command1_Click()
For i = 101 To 199 Step 2
For j = 2 To Sqr(i)
If i Mod j = 0 Then Exit For
Next
If j > Sqr(i) Then
Print i;
c = c + 1
If c Mod 5 = 0 Then
Print
End If
End If
Next
End Sub

18.输入一个偶数,验证该数符合哥德巴赫猜想。
Option Explicit
Private Sub Command1_Click()
Dim N%, N1%, N2%, I%, K1%, K2%
N = Val(InputBox("输入大于6的偶数"))
For N1 = 3 To N \ 2 Step 2
K1 = Int(Sqr(N1))
For I = 2 To K1 '判断N1是否是素数
If N1 Mod I = 0 Then Exit For
Next I
If I > K1 Then '如果N1为素数,将N分解为N1+N2
N2 = N - N1
K2 = Int(Sqr(N2))
For I = 2 To K2 '判断N2是否是素数
If N2 Mod I = 0 Then Exit For
Next I
If I > K2 Then ' 如果N2也为素数,则打印输出
Print N & "=" & N1 & "+" & N2
End If
End If
Next N1
End Sub
19.验证100~200之间所有的偶数符合哥德巴赫猜想。
Option Explicit
Private Sub Command1_Click()
Dim i As Integer
Dim j As Integer
Dim x As Integer
Dim y As Integer
Dim z As Integer
k: x = Val(InputBox("请输入一个数"))
If x < 6 And x Mod 2 <> 0 Then
GoTo k
Else
Print x
For y = 2 To x / 2
z = x - y
For i = 2 To y - 1
If y Mod i = 0 Then Exit For
Next i
If i > y - 1 Then
For j = 2 To z - 1
If z Mod j = 0 Then Exit For
Next j
If j > z - 1 Then
Print y; "+"; z
End If
End If
Next y
End If
End Sub
20.输出一个5阶的杨辉三角形
Option Explicit
Dim A() As Integer
Dim n As Integer, i, j%
Private Sub Command1_Click()
ReDim A(6, 6)
For i = 1 To 6
For j = 1 To j
If j = 1 Or j = i Then
A(i, j) = 1
Else
A(i, j) = A(i - 1, j - 1) + A(i - 1, j)
End If
Next j, i
For i = 1 To 6
For j = 1 To i - 1
Print Tab(50 - i * 3 + j * 6); A(i, j); Spc(1);
Next j
Print
Next i
End Sub
21.输出下面的图案
C
C H
C H I
C H I N
C H I N A

Option Explicit
Dim A As String
Dim i%, j%
Private Sub Command1_Click()
For j = 0 To 5
A = Mid("CHINA", 1, i)
Print A
i = j + 1
Next j
Print
End Sub
22.输出一个n矩阵等腰三角形,其外形如下

提示:倒数第一行一个,倒数第二行3个,……

Option Explicit
Dim i!,j!,T$,x$
Private Sub Command1_Click()
For i = 0 To 3
x = ""
For j = 1 To (7 - Abs(i) * 2)
x = x & "*"
Next
T = Space(Abs(i)) & x & Space(Abs(i))
Print T
Next
End Sub
23.先成一个10阶的一维随机数组,数组的每个元素值为[10,50],将这个数组用选择法及冒泡法二种排序方法排序,编写该代码。
Option Explicit
Dim k%,i%,j%,t%,m%,n%
Private Sub Command1_Click()
Dim x%(1 To 5, 1 To 10)
For m = 1 To 5
For n = 1 To 10
Randomize
x(m, n) = Int(Rnd * 100 + 2000) '产生50个随机数
Picture3.Print Tab(6 * n - 4); x(m, n);
Next n
Print
Next m
End Sub
Private Sub Command2_Click()
Dim x%(1 To 10)
For k = 1 To 10
Randomize
x(k) = Int(Rnd * 41 + 10) '产生10个随机数
Picture1.Print x(k);
Next k
For i = 1 To 9
For j = i + 1 To 10
If x(i) > x(j) Then
t = x(i): x(i) = x(j): x(j) = t '大数沉底
End If
Next j
Next i
For m = 1 To 10
Picture2.Print x(m); '打印排列后的顺序
Next m
End Sub
Private Sub Command3_Click()
Dim x%(1 To 10)
For k = 1 To 10
Randomize
x(k) = Int(Rnd * 41 + 10) '产生10个随机数
Picture1.Print x(k);
Next k
For i = 1 To 9
For j = 1 To 10 - i
If x(j) > x(j + 1) Then
t = x(j): x(j) = x(j + 1): x(j + 1) = t '两两比较,大数换到后面
End If
Next j
Next i
For m = 1 To 10
Picture2.Print x(m); '打印排列后的顺序
Next m
End Sub
24.生成一个50阶的随机数组,其元素值为[100,2000]。1、元素值不重复,再人为输入一个数,在50个元素值中找出与之相等的那个元素,如果没有这个数,给出相应的信息。2、元素值可以重复,再人为输入一个数,在50个元素值中找出与之相等的那个元素并统计相等的个数,如果没有这个数,给出相应的信息。
Option Explicit
Dim n%, m%, h%, t%, s%
Dim x%(1 To 5, 1 To 10)
Private Sub Command1_Click()
Picture1.Cls
For m = 1 To 5
For n = 1 To 10
Randomize
x(m, n) = Int(Rnd * 100 + 1) '产生50个随机数
Picture1.Print Tab(6 * n - 4); x(m, n);
Next n
Next m
End Sub
Private Sub Command2_Click()
h = Val(Text1)
t = False
For m = 1 To 5
For n = 1 To 10
If x(m, n) = h Then
t = True
End If
If t Then Label2 = "找到了" Else Label2 = "没找到"
Next n
Next m
End Sub
Private Sub Command3_Click()
h = Val(Text1)
t = False
For m = 1 To 5
For n = 1 To 10
If x(m, n) = h Then
s = s + 1
t = True
End If
If t Then Label2 = "找到了,这个数出现了" & s & "次" Else Label2 = "没找到"
Next n
Next m
End Sub
26.制作一个程序,其功能为输入年份,输出该年份的属相(分别用字符串和数组方式进行数据处理)。
法一:Private Sub Command1_Click()
Dim A%,c%,b$
c = Val((InputBox("请输入你的出生年份")))
A = c Mod 12
b = Mid("猴鸡狗猪鼠牛虎兔龙蛇马羊", A + 1, 1)
Print "你的出生的属相是"; b
End Sub
法二:Private Sub Command2_Click()
Dim tyea As Integer
Dim x(11) As String
Dim A As Integer
x(0) = "猴"
x(1) = "鸡"
x(2) = "狗"
x(3) = "猪"
x(4) = "鼠"
x(5) = "牛"
x(6) = "虎"
x(7) = "兔"
x(8) = "龙"
x(9) = "蛇"
x(10) = "马"
x(11) = "羊"
tyea = Val((InputBox("请输入你的出生年份")))
A = tyea Mod 12
Print tyea; "你的出生的属相是"; x(A)
End Sub
28.利用自定义过程和函数的方法编程计算下式:
其中:M、N在程序运行时输入。
Option Explicit
Dim n%, t%, m%
Private Sub Command1_Click()
m = Val(Text1): n = Val(Text2) '计算M!/(N!(M-N)!)
t = jc(m) / (jc(n) * jc(m - n))
Label1 = "计算结果是" & t
End Sub
Private Function jc&(ByVal m%)
If m = 1 Then
jc = 1
Else
jc = jc(m - 1) * m
End If
End Function
29.利用递归调用方式计算:

其中:n在程序运行时输入。
Option Explicit
Dim n%, t%
Private Sub Command1_Click()
n = Val(Text1) '计算1*2+3*4+^^^(N-1)*N
t = f(n)
Label1 = "计算结果是" & t
End Sub
Private Function f&(ByVal n%)
If n = 2 Then
f = 2
Else
f = f(n - 1) + n * (n - 1)
End If
End Function
30.利用递归调用方式计算斐波那切数列:
斐波那切数列:1、1、2、3、5、8、13、……、2n-3
Option Explicit
Dim n%, t%
Private Sub Command1_Click()
n = Val(Text1) ' 计算斐波那切数列
t = h(n)
Label1 = "计算结果是" & t
End Sub
Private Function h&(ByVal n%)
If n = 1 Or n = 2 Then
h = 1
Else
h = h(n - 1) + h(n - 2)
End If
End Function
31.最大程序的利用自定义函数或自定义过程编写验证100~200之间所有的偶数符合哥德巴赫猜想。
Option Explicit
Dim i%, j%, s%
Private Sub Command1_Click()
For i = 100 To 200 Step 2 '验证100~200之间所有的偶数符合哥德巴赫猜想。
For j = 3 To i / 2
If g(j) And g(i - j) Then
s = s + 1
Picture1.Print Tab(13 - 12 * (s Mod 2)); i & "=" & j & "+" & (i - j);
End If
Next j
Next i
End Sub
Private Function g(ByVal m%) As Boolean
g = True
For s = 2 To Sqr(m)
If m Mod s = 0 Then
g = False
End If
Next s
End Function
32.以一个标签为目标,利用一组命令按钮(控件数组形式)设置其背景色。以一个文本框为目标,利用另一组命令按钮(控件数组形式)设置其字形(加粗、倾斜、下划线)。
Private Sub Command1_Click(Index As Integer)
A = Index
Select Case A
Case 0
Label1.BackColor = &HFF&
Command1(4).Visible = True
Case 1
Label1.BackColor = &HFF0000
Command1(3).Visible = True
Case 2
Label1.BackColor = &HFF00FF
Command1(2).Visible = True
Case 3
Label1.BackColor = &HFF00&
Command1(1).Visible = True
Case 4
Label1.BackColor = &HFFFF&
End Select
End Sub
Private Sub Command2_Click(Index As Integer)
Select Case Index
Case 0
Text1.FontBold = True
Command2(1).Visible = True
Case 1
Text1.FontItalic = True
Command2(2).Visible = True
Case 2
Text1.FontUnderline = True
Command2(3).Visible = True
Case 3
Text1.FontStrikethru = True
End Select
End Sub
33.制作一个计算器的界面。
. Option Explicit
Dim a!, b!, c!, e As String
Private Sub Command3_Click()
a = 0
b = 0
c = 0
e = ""
Picture1.Cls
Text1 = ""
End Sub
Private Sub Command4_Click()
Call ff
e = "+"
End Sub
Private Sub Command5_Click()
Call ff
e = "-"
End Sub
Private Sub Command6_Click()
Call ff
e = "*"
End Sub
Private Sub Command7_Click()
Call ff
e = "/"
End Sub
Private Sub Command8_Click()
Call ff
End Sub
Private Sub Command9_Click(Index As Integer)
Select Case Index
Case 0
Text1 = Text1 + "0"
Case 1
Text1 = Text1 + "1"
Case 2
Text1 = Text1 + "2"
Case 3
Text1 = Text1 + "3"
Case 4
Text1 = Text1 + "4"
Case 5
Text1 = Text1 + "5"
Case 6
Text1 = Text1 + "6"
Case 7
Text1 = Text1 + "7"
Case 8
Text1 = Text1 + "8"
Case 9
Text1 = Text1 + "9"
End Select
End Sub
Sub ff()
a = Val(Text1)
If e = "" Then
b = a
c = a
Else
Select Case e
Case "+"
c = b + a
Case "-"
c = b - a
Case "*"
c = b * a
Case "/"
If a = 0 Then a = 1
c = b / a
End Select
b = c
End If
Text1 = ""
Text1.SetFocus
Picture1.Cls
Picture1.Print c
End Sub
第2个回答  2010-12-12
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