求助(我的第一篇文章)
阿新 • • 發佈:2021-12-09
今天剛剛釋出這篇文章,也是為了徵求各位大佬,下面的這個是我做的一個vb小程式,它可以執行二元一次方程的演算法
Private Sub Command1_Click() Dim a, b, c As Integer a = Val(Text1.Text) b = Val(Text2.Text) c = Val(Text3.Text) If Not IsNumeric("a,b,c") Then MsgBox "你輸入的不是純數字" Else Text1.Text = "" Text2.Text = "" Text3.Text = "" Text1.Text = "" End If dt = b ^ 2 - 4 * a * c Select Case dt Case Is >= 0 a1 = -b + Sqr(dt) / 2 * a a2 = -b - Sqr(dt) / 2 * a Label1.Caption = "x1為:" & a1 & "取整為:" & Val(Fix(a1)) & Chr(13) & Chr(10) & "x2為:" & a2 & "取整為:" & Val(Fix(a2)) Case Else Label1.Caption = "這個方程在實數範圍內無解" End Select End Sub Private Sub Form_Load() Text1.Text = "" Text2.Text = "" Text3.Text = "" Command1.Caption = "二元一次方程為" Label1.Caption = "" End Sub