Texas Instruments TI-80 User Manual - Page 152

Getting Started: Rolling a Die

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Getting Started: Rolling a Die Getting Started is a fast-paced introduction. Read the chapter for details. A program is a set of commands that can be executed sequentially, as if they had been entered from the keyboard. Write a simple program to simulate the rolling of a single die. It should prompt for the number of rolls and then store the results of the rolls in a list. 1. Press K 9 9 to display the PRGM NEW menu. 2. Press ¸ to select CREATE NEW. (The keyboard is now in ALPHA-LOCK.) Type R O L L as the name of the program, and press ¸. You are now in the program editor. The : (colon) in the first column of the second line indicates that this is the beginning of a command line. 3. Press K 9 to access the PRGM I/O menu. Press 4. CLRHOME is copied to cursor location. Press ¸ to complete the instruction and move to the next line. 4. Press 0 § 2 = 3 2 ¢. This sets the dimension of Lã (the list where the results of the rolls will be stored) to 0. Press ¸ to complete the instruction and move to the next line. 5. Press K 9 1 to copy INPUT to the cursor location. Press 2 < ã"ä ROLLS 2 D 1 ? ã"ä b ? R to prompt the user to input the number of rolls. Press ¸ to complete the instruction. 6. Press K 4 to copy FOR( to the cursor location. Press ? I b 1 b ? R b 1 d. Press ¸ to complete the instruction. 10-2 Programming

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10-2
Programming
Getting Started is a fast-paced introduction. Read the chapter for details.
A program is a set of commands that can be executed sequentially, as if they
had been entered from the keyboard. Write a simple program to simulate the
rolling of a single die. It should prompt for the number of rolls and then store the
results of the rolls in a list.
1.
Press
K
9
9
to display the
PRGM NEW
menu.
2.
Press
¸
to select
CREATE NEW.
(The keyboard
is now in
ALPHA-LOCK.
) Type
R O L L
as the name
of the program, and press
¸
. You are now in the
program editor. The
:
(colon) in the first column of
the second line indicates that this is the beginning of
a command line.
3.
Press
K
9
to access the
PRGM I/O
menu. Press
4
.
CLRHOME
is copied to cursor location. Press
¸
to complete the instruction and move to the
next line.
4.
Press
0
§
2
=
3
2
¢
. This sets the
dimension of
L
ã
(the list where the results of the rolls
will be stored) to 0. Press
¸
to complete the
instruction and move to the next line.
5.
Press
K
9
1
to copy
INPUT
to the cursor
location. Press
2
<
ã
"
ä
ROLLS
2
D
1
?
ã
"
ä
b
?
R
to prompt the user to input the
number of rolls. Press
¸
to complete the
instruction.
6.
Press
K
4
to copy
FOR(
to the cursor location.
Press
?
I
b
1
b
?
R
b
1
d
. Press
¸
to complete the instruction.
Getting Started: Rolling a Die