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vb.net教程之综合实例
综合实例(相关vb.net教程)
用定义类的方法编程序,对任输入的矩形的两边,求其周长与面积,并对输入的两边进行正确性检查。见,矩形的两边求面积与周长类,程序为:[实验报告7] 或类的应用矩形问题
Public Class juxing
Public w, h As Integer
Public Sub New()
w = 0 : h = 0
End Sub
Public Sub New(ByVal a As Integer, ByVal b As Integer)
If a >= 0 Then
w = a
Else
MsgBox("无效的矩形长度,即将退出!", MsgBoxStyle.OkOnly, "提示")
End
End If
If b >= 0 Then
h = b
Else
MsgBox("无效的矩形高度,即将退出!", MsgBoxStyle.OkOnly, "提示")
End
End If
End Sub
Public Function zhouchang(ByVal w As Integer, ByVal h As Integer) As Integer
zhouchang = 2 * (w + h)
End Function
Public Function area(ByVal w As Integer, ByVal h As Integer) As Double
area = w * h
End Function
End Class
测试类为:
Public Class Form1
Dim x, y As Integer
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim p As Integer
Dim s As Double
x = InputBox("输入矩形的长度", "输入", 1)
y = InputBox("输入矩形的高度", "输入", 1)
Dim a As New juxing(x, y)
p = a.zhouchang(x, y)
s = a.area(x, y)
Console.WriteLine("矩形的两边为:" & x & " " & y)
Console.WriteLine("矩形的周长为:" & p)
Console.WriteLine("矩形的面积为:" & s)
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
End
End Sub
End Class
用定义类的方法编程序,对任输入的矩形的两边,求其周长与面积,并对输入的两边进行正确性检查。见,矩形的两边求面积与周长类,程序为:[实验报告7] 或类的应用矩形问题
Public Class juxing
Public w, h As Integer
Public Sub New()
w = 0 : h = 0
End Sub
Public Sub New(ByVal a As Integer, ByVal b As Integer)
If a >= 0 Then
w = a
Else
MsgBox("无效的矩形长度,即将退出!", MsgBoxStyle.OkOnly, "提示")
End
End If
If b >= 0 Then
h = b
Else
MsgBox("无效的矩形高度,即将退出!", MsgBoxStyle.OkOnly, "提示")
End
End If
End Sub
Public Function zhouchang(ByVal w As Integer, ByVal h As Integer) As Integer
zhouchang = 2 * (w + h)
End Function
Public Function area(ByVal w As Integer, ByVal h As Integer) As Double
area = w * h
End Function
End Class
测试类为:
Public Class Form1
Dim x, y As Integer
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim p As Integer
Dim s As Double
x = InputBox("输入矩形的长度", "输入", 1)
y = InputBox("输入矩形的高度", "输入", 1)
Dim a As New juxing(x, y)
p = a.zhouchang(x, y)
s = a.area(x, y)
Console.WriteLine("矩形的两边为:" & x & " " & y)
Console.WriteLine("矩形的周长为:" & p)
Console.WriteLine("矩形的面积为:" & s)
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
End
End Sub
End Class
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