Converts a string to a floating point number
Syntax
Usage
result = Val( strnum )
Parameters
strnum
the string containing a number to convert
Return Value
Returns a converted
Double precision number.
If the first character of the string is invalid,
Val will return a 0.
Description
Val("10") will return 10.0, and
Val("10.10") will return 10.1. The function parses the string from the left, skipping any white space, and returns the longest number it can read, stopping at the first non-suitable character it finds. Scientific notation is recognized, with
"D" or
"E" used to specify the exponent.
Val can be used to convert integer numbers in binary / octal / hexadecimal format, if they have the relevant identifier (
"&B" /
"&O" /
"&H") prefixed, for example:
Val("&HFF") returns 255.
Note:
If you want to return an integer, consider using
ValInt or
ValLng instead. They are faster, since they don't use floating-point numbers, and only
ValLng provides full 64-bit precision for
LongInt types.
If you want to convert a number into string format, use the
Str function.
Example
Dim a As String, b As Integer
a = "20xa211"
b = Val(a)
Print a, b
20xa211 20
Differences from QB
See also