15电气2班徐立立(两位数乘以一位数）

在通用中编译

Dim sum As Integer

Dim i As Integer

Dim a As Integer

在command1中编译

第一种：

Private Sub Command1_Click()

sum = 0

For i = 1 To 10

Randomize

a = Int(1000 * Rnd)

sum = sum + a

MsgBox "10个随机数和为：" & sum

Next

Do While i <= 10

Randomize

a = Int(1000 * Rnd)

sum = sum + a

MsgBox "10个随机数和为：" & sum

Loop

End Sub

第二种

Private Sub Command1_Click()

sum = 0

For i = 1 To 10

Randomize

a = Int(1000 * Rnd)

sum = sum + a

i=i+1

Next

MsgBox "10个随机数和为：" & sum

Do While i <= 10

Randomize

a = Int(1000 * Rnd)

sum = sum + a

i = i + 1

Loop

MsgBox "10个随机数和为：" & sum

End Sub

第三种

i = 1

Do Until i > 10

Randomize

a = Int(1000 * Rnd)

sum = sum + a

i = i + 1

Loop

MsgBox "10个随机数和为：" & sum

第四种

i = 1

Do

Randomize

a = Int(1000 * Rnd)

sum = sum + a

i = i + 1

Loop While i <= 10

MsgBox "10个随机数和为：" & sum

i = 1

Do

Randomize

a = Int(1000 * Rnd)

sum = sum + a

i = i + 1

Loop Until i > 10

MsgBox "10个随机数和为：" & sum

End Sub

第五种

Private Sub Command1_Click()

Cls

Dim n As Integer, s As Integer

Dim a(10) As Integer

n = 1

While n <= 10

a(n) = Int(Rnd * 1000)

n = n + 1

Wend

n = 1

While n <= 10

Print a(n)

n = n + 1

Wend

s = 0

n = 1

Dim t As Integer

For Each t In a

s = s + t

Next

Print s

End Sub

注：for each 数组的控件变量是变体

六：

Private Sub Command1_Click()

Cls

Font.Size = 70

Print f(100)

End Sub

Private Function f(x As Integer) As Long

If x = 1 Then

f = x

Else

f = x + f(x - 1)

End If

End Function