VAL (value)
| Keyword | Token | Version | Category(s) |
|---|---|---|---|
| VAL | $C5 | 1.0 | Function |
Syntax
VAL(string)
Where string is a character string literal, variable or expression.
Purpose
Convert a character string to floating-point number.
Return Value
Any valid floating-point value.
Notes
The string should contain characters representing a decimal number without any punctuation except for period (.), plus (+), minus (-), or “e” (scientific format). To convert a string representing a hexidecimal number, see DEC().
Any spaces (character $20 = CHR$(32)) are ignored. Conversion stops at the first invalid character. If no valid numeric characters were found, the returned value is zero. This is important, as some characters will appear as a space on screen but if they precede the numeric characters, VAL() will return zero! Particularly bad are the non-breaking-space and cursor-right characters ($A0 = CHR$(160) and $1D = CHR$(29), respectively) – these usually appears exactly like a space on-screen! Other leading white space (tabs, line feed, carriage return) will cause the same problem, although they usually are obviously the problem when printed on-screen.
Examples
PRINT VAL(" 12 3")
123
PRINT VAL(" 12,3")
12
PRINT VAL(" 12.3")
12.3
PRINT VAL("1BED")
1
PRINT VAL("BED")
0
PRINT VAL("")
0
Compare with DEC()
Contrast with STR$(), HEX$()
This page is a member of Commodore BASIC
