Commodore Plus 4 - Page 69

BASIC Version 3.S Commands, Functions, and System Variables
Parameters: string being truncated, number of characters to use
87
1. The master string can be any text string, text-string variable, or string
expression.
2. The LEFTS result always begins at the leftmost character in the master
string. You can keep as many characters as you want. If the length specified is
longer than the master string, the whole string is returned.
Examples: PRINT LEFT$( "GRADUAL" ,4)
GRAD
PRINT LEFT$("RED",4) The string contains only
RED three characters, so only
three are printed.
10 INPUT "DO YOU WANT TO CONTINUE"; A$Checks text string A$,
20 IF LEFT$(A$,1)="Y" THEN GOSUB 70: input in line 10, for the
ELSE END ■ string Y.
LEN
LEN (string)
Abbr. none
Counts the number of characters in a text string.
Parameter: master string
The master string can be any text string, text-string variable, or string expres
sion. Blank spaces and punctuation count as characters.
Examples: PRINT LEN("HAYWIRE")
7
10 INPUT "WHAT'S YOUR LAST NAME"; L$
SO IP LEN(L$) > 8 THEN L$ = LEFT(L$,8):
PRINT "YOUR NAME HAS BEEN
SHORTENED"
30 PRINT L$
RUN
WHAT'S YOUR LAST NAME ? MACD0NALDS0N
YOUR NAME HAS BEEN SHORTENED
MACDONAL
Checks the length of
L$ and used only the
eight leftmost char
acters if the length is
over eight.