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Programming with LPL
Making Objects
22-10 Using the LI-6400
22
size, the final array size matches the initializing sequence count (Table 22-5).
Char Arrays (Strings)
LPL implements strings as CHAR arrays. Characters and character arrays
can be initialized exactly like integers, but can also be initialized with string
constants. Generally, string constants begin and end with a double quote ("),
and everything in between is taken literally, including spaces, newline char-
acters, and comments. Actually, one can use any character to mark the start
and end of the string when declaring a
CHAR
array; whatever non-
whitespace character is first encountered when the parser is looking for the
initializing string is used for the terminating character of that string.
Examples of initializing
CHAR
s and
CHAR
arrays are shown in
Figure 22-2:
Character arrays can also be initialized with a combination of characters and
numeric values by using escape sequences. For example, suppose you wish
to include double quotes within the string. Knowing that the decimal equiva-
lent of the double quote character is 34, one can write
Table 22-5. Declaring arrays.
Declaration Size Initial Ready
:FLOAT abc[5] {1.234 1.23E+5 0 4.26 -.001} 5 5
:CHAR def[] {12 20 -15 2 33 6} 6 6
:INT jkl[10] {0xffff ÔAÕ 33} 10 3
:LONG xyz[3] {1 2 3 4 5} 5 5
:CHAR
flag 1
decimal '.'
esc 0x1b
name[80] "SYSTEM"
bad[] "Illegal Value!"
theBest[] .Penn State.
ok[] {1 2 5 9 20}
Figure 22-2. Declaring CHARs and strings.