Commodore PET User Manual page 111

The program has already been developed in immediate mode. Now that the
groundwork is done, making a stored program out of the program that we know
works in immediate mode is simple. Just type in the statements line by line,
beginning each statement with an increasingly larger line number. Remember
that vou still need the semicolons, which are the PRINT format but not the colons
when putting statements one per line. Terminate each line with a RETURN.
READ'r'.
100 C$="A"
110
?"::']".;
120 FOR 1=1 TO 840
130 PRHH C$;
140
NEXT
150
PRINT"PHEIoJ!"
Each time a numbered line is entered, PET stores the line in memory. You
will not have to type the display program line in again now that it is a stored pro-
gram. You then use the LIST, RUN, and SAVE commands to recall and rerun your
program.
Listing a Program
When the display program looks correct list it and look it over again. To list
a program, type the word LIST on any free line and hit RETURN.
LIST
100 C$="A"
110
?"::']".;
120 FOR 1=1 TO 840
130
PR1tH C$.;
140
NEXT
150
PR
ItH" PHEI~
! "
READ'r'.
Note that the ?'s vou entered have been expanded to the word PRINT; PET
does this automatically. If vou see any errors, correct them.
Running a Program
When the program looks completely correct execute the program by typing
RUN, followed by a RETURN.
;';:Ut·j
If the program was typed in correctly, vou should see the same display we
have used throughout this chapter, only with the letter A.
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