Question

VB.NET 一道编程题 求助大家帮忙

建立一个项目,名称为”func”,计算下列分段函数值:

3x5+6x-1 (x<5)
y= 5x-5 (5<=x<=20)
3x2+2x-9 (x>20)
要用VB.NET2005 做的 请大家帮帮我 我会给你们加分的

Answer 1

Function func(ByVal x As Integer, ByVal y As Integer) As Integer
If x < 5 Then
y = 3 * 5 + 6 * x - 1
ElseIf x >= 5 And x <= 20 Then
y = 5 * x - 5
ElseIf x > 20 Then
y = 3 * 2 + 2 * x - 9
End If
func = y
End Function

Answer 2

Sub func()
Dim x, y As Integer
If (x < 5) Then y=3x5+6x-1
Else If (x >= 5& & x <= 20) Then y= 5x-5
Else 3x2+2x-9
End Sub