VB b=val(text1.text)-1 dim a(b) as Integer 这样写出现 要求常数表达式那么如何定义一个数组变量且括号里面的值等于text1.text的值减去1呢,

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VBb=val(text1.text)-1dima(b)asInteger这样写出现要求常数表达式那么如何定义一个数组变量且括号里面的值等于text1.text的值减去1呢,VBb=val(text1

VB b=val(text1.text)-1 dim a(b) as Integer 这样写出现 要求常数表达式那么如何定义一个数组变量且括号里面的值等于text1.text的值减去1呢,
VB b=val(text1.text)-1 dim a(b) as Integer 这样写出现 要求常数表达式
那么如何定义一个数组变量且括号里面的值等于text1.text的值减去1呢,

VB b=val(text1.text)-1 dim a(b) as Integer 这样写出现 要求常数表达式那么如何定义一个数组变量且括号里面的值等于text1.text的值减去1呢,
dim语句定义数组时,必须用确定的数字,如dim a(10),不能用变量
如果不能确定数组维数,可以定义动态数组,如:
dim a()
b=10
redim a(b)

VB b=val(text1.text)-1 dim a(b) as Integer 这样写出现 要求常数表达式那么如何定义一个数组变量且括号里面的值等于text1.text的值减去1呢, VB编程,一元二次方程a*x^2+b*x+c=0的根Dim a As Double Dim b As Double Dim c As Double Dim delta As Double Dim x1 As Double Dim x2 As Double a = Val(Text1.Text) b = Val(Text2.Text) c = Val(Text3.Text) delta = b * b - 如何用vb设计计算二次方程的根的程序Private Sub Command1_Click()Dim a As Single,b As Single,c As Single,d As Singlea = Val(Text1.Text)b = Val(Text2.Text)c = Val(Text3.Text)d = b ^ 2 - 4 * a * cIf d > 0 ThenLabel8.Caption = (-b + Sqr(d)) vb解二次函数代码问题!代码如下Private Sub Command1_Click()Dim a As Single,b As Single,c As SingleDim n As Single,m As Singlea = Val(Text1.Text)b = Val(Text2.Text)c = Val(Text3.Text)If b ^ 2 - 4 * a * c < 0 ThenLabel3.Caption = 无解Els VB 判断a能否被b整除,能够整除输出“能”,否则输出“不能”.dimaasintegerdimbasintegera=val(text1.text)b=val(text2.text)if a mod b = 0 then text3.text=”能” else text3.text=”不能”显示除数为零,哪里错了 在VB 语句中 x = Val(Text1.Text) Val Dim y As IntegerPrivate Sub Command1_Click()Text2.Text = yEnd SubPrivate Sub Text1_Change()x = Val(Text1.Text)If x < 0 Or x > 100 ThenText1.Text = Text1.SetFocusLabel1.Caption = 请重新输入ElseLabel1.Ca VB判断方程是否有实数根在线等Private Sub Command1_Click()Dim a As IntegerDim b As IntegerDim i As Stringa = Val(Text1.Text)b = Val(Text2.Text)If b * b - 4 * a * c >= 0 Theni = 有Elsei = 没有End IfText3.Text = iEnd Sub哪里错了 Private Sub Command1_Click() A = Val(Text1.Text):B = Val(Text2.Text) For M = A To B M = M + 1 NextPrivate Sub Command1_Click()A = Val(Text1.Text):B = Val(Text2.Text)For M = A To BM = M + 1Next MLabel1 = MEnd Sub当A为1,B为2时,运行出来为什么 for k =1 to 5,怎么算的?private sub command1_click()dim k as integer ,s as single,a as single,b as singlea=val(text1(0).text)s=ab=afor k =1 to 5s=s+val(text1(k).text)if aval(text1(k).text)thenb=val(text1(k).text)end if next ks=(s-a-b)/4s=s*3*val(t 下列代码中为什么要写成 a=Val(Text1.Text),而不是直接写成 a=Text1.Text VB中Text1.text=text1.text+CStr(a(i))+ If i=4 then text1.text=text1.text+chr(13)+chr(10)VB中Text1.text=text1.text+CStr(a(i))+ If i=4 then text1.text=text1.text+chr(13)+chr(10)中1, 2,chr(13)+chr(10)是不是ASCII的代码, 在vb中编辑程序,输入一个整数,判断是0,正整数,还是负整数Dim a As Stringa = Val(Text1.Text)If a < 0 Thenb = 负整数ElseIf a > 0 Thenb = 正整数Elseb = 0End IfText2.Text = b我这样有什么问题吗? VB奇数求和Private Sub Command1_Click()vl = Val(Text1.Text)vj = Val(Text2.Text)If vl < vj Then Exit SubFor i = 1 To vl Step 2sumi = sumi + iIf sumi >= vj ThenExit ForEnd IfNext iText3.Text = iText4.Text = sumiEnd SubPrivate Sub Form_Load()Me.Capti VB中, text1=1和text1.text=1有没有区别? VB 条件语句+限制文本框输入 条件语句问题:如果Text1.texe = A 则 text6.text = 10 '国文如果Text1.texe = A+ 则 text6.text = 12如果Text1.texe = B 则 text6.text = 14如果Text1.texe = C 则 text6.text = 16如 VB 怎样定义A&B=C D&E=CPrivate Sub Form_Load()怎样定义A&B=C D&E=CEnd SubPrivate Sub Command1_Click() If Text1.Text & Text2.Text = C Then MsgBox XXX当在Text1.Text 输入A Text2.Text 输入B时 那么MSGBOX或当在Text1.Text 输入D Text2.Te 1段加法运算程序Private Sub Command1_Click()Text1.Text = str$(Val(Text2.Text) + Val(Text3.Text))教程上是这么写的,但是我有点想不明白..这样写不也一样么?Private Sub Command1_Click()Text1.Text = (Val(Text2.Text) + Val(Text3 【VB的使用中间量交换两个变量数值】Dim x,y As Singlex = Val(Text1.Text)y = Val(Text2.Text)a=xx=yy=a那里错了,交换不成功,可是输入的是整数啊 ,而且交换不了.