Chapter 7
RAPID!
Functions
304
4460 GSM System Option and 4468 EDGE System Option
Version 12.20
VAL$
String functions
This subsection describes functions that operate on strings.
Note:
In case uninitialized variables are used as arguments, the returned values
will usually be empty strings or ‘0’.
ASC
Syntax
VAL$(aNumber [, digits ])
Parameters
aNumber
is a numeric expression.
digits
is a numeric expression, resulting in a positive
integer.
Description
Returns a string containing the numeric representation
of
aNumber
.
The number of decimal places may be specified using the
optional
digits
command element.
In case
aNumber
uses more decimal places than speci-
fied with
digits
, the additional decimal places will be
truncated (i.e. there will be no rounding).
If
digits
is omitted, six decimal places will be used.
Examples
VAL$(123)
returns the string
"123.000000"
.
VAL$(123.456789, 2)
returns the string
"123.45"
.
VAL$(123.456789, 0)
returns the string
"123"
.
Function
Short description
ASC
Returns the ASCII code of the first character in a string.
CHR$
Returns the character representing the ASCII value of an
integer number as a string.
INSTR
Searches for the occurrence of a specific sequence of
characters within a string.
LEN
Returns the number of characters included in a string.
LEFT$
Reads a specific part of a string, starting from its begin-
ning.
MID$
Reads a specific part of a string.
RIGHT$
Reads a specific part of a string, starting from its end.
SPACE$
Returns a string, filled with a specific number of blanks.
Syntax
ASC(aString$)
Parameters
aString$
is a valid string expression.
Description
Returns the ASCII code of
aString$
’s first character.
If the string is empty, ‘0’ will be returned.
