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vB字符串转换为浮点数

就是用Val,没错的。 Val不是单单变整数的,它是将字符型转换为数值型。注意:整型和浮点型都属于是数值型。 你可以试试 Dim a As String Dim f As Double a = "1.6533555" f = Val(a) Print f 这样打印出的结果就是 1.6533555。 我的电脑上VB6....

VB中字符串的数据类型为String,小数的数据类型为Float(单精度浮点型小数)和Double(双精度浮点型小数)。 将由数字组成的字符串变量转换为数值型变量,用的是Val(S)函数,S代表完全由数字组成的字符串。比如字符串a="39.3245",要把这个字符转换...

Dim s As String = "你的字符串" Dim si As Single = CType(Val(s), Single) MsgBox(si) 程序里测试通过 你试试看。

LZ所举得例子:浮点数+9.9651e+01实际就是以 99.651显示的。 Private Sub Command1_Click() Dim a As String a = "+9.9651e+01" Debug.Print Str(a)End Sub上述代码执行结果以字符串显示就是99.651。

Private Sub Command1_Click()Dim a As Doublea = 1 / 1001Print aPrint Round(a, 6)Print Format(a, "#.######")End Sub

VB使用CSng 函数可将整数型数据类型转换成单精度浮点数据类型。 CSng 函数示例 本示例使用 CSng 函数将一整型数值转换为 Single。 Private Sub Command1_Click() Dim MyInteger As Integer Dim MySingle As Single MyInteger = 7534 MySingle = ...

使用API函数CopyMemory来转换。 Option Explicit Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long) Private Sub Command1_Click() Dim BB(0 To 3) As Byte Dim...

http://blog.csdn.net/zdingyun/archive/2008/06/09/2528026.aspx

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim aa(3) As Byte Dim f As Single aa(0) = &H0 aa(1) = &H0 aa(2) = &H80 aa(3) = &H3F 'CopyMemory(f, aa, 4) f = BitConverter.T...

Private Sub Command1_Click() Dim a As Single Print Sqr(2) Print Sqr(3) a = Sqr(2) * Sqr(3) Print a; " "; Format$(a, "00.00E+00") End Sub 执行上述代码,你能看出个大概。 Single 数据类型 Single(单精度浮点型)变量存储为 IEEE 32 位...

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