Radio Shack TRS-80 Model 100 Basic Manual page 81

Basic language lab
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Using the arrow keys, position the cursor over the letter G of the variable AG in line
40. When you have done this, line 40 should appear as:
40 PRINT "YOUR AGE
IS!I~
Press
(BKSP)
to delete the letter A. Line 40 now should appear as
At this point, the editing is finished. Press
(ESC)
twice to exit from the Editor. List the
program to confirm it is:
10 INPUT "YOUR NAME"; N$
20
READ A$, G
30
IF A$
< >
N$ THEN GOTO
20
a0
PRINT "YOUR AGE IS", G
50
DATA DAN,
32,
RON,
38,
LINDA,
42
80
DATA BETTY,
35,
RALPH,
28,
SKIP,
3
Execute the program to confirm that it is working correctly.
It should be clcar that characters can bc easily deleted with the use of the Editor. You
need only remember to position the cursor one character to the right of the character to
be deleted.
Another very similar way to delete characters consists of entering the Editor,
positioning the cursor right over the character you wish to delete and then pressing
(DEL) (CSHIFT)(BKSP)).
As with
(BKSP),
characters to the right of the deletion will shift to the left to fill the
vacant space.
Experiment #4 Changing a Character
Here is the previous program again as it currently exists in memory:
10 INPUT "YOUR NAME"; N$
20
READ A$, G
30
IF A$
< >
N$ THEN GO TO
20
a0
PRINT "YOUR AGE IS", G
50
DATA DAN,
32,
RON,
38,
LINDA,
a2
80
DATA BETTY,
35,
RALPH,
28,
SKIP,
3
The comma in line 40 will be changed to a semicolon so that the age will be printed
closer to the phrase "YOUR AGE IS." The comma specifies that the age will be
printed in the next field. The use of a semicolon, however, will eliminate all but one
space before the age. The change will be made with the Editor.
Enter the Editor with the command
ED I T
(ENTER)
75

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