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     Chapter 12: Programming
7312ENG.DOC   CH 12 Programming, English   Julie Hewlett   Revised: 07/29/98 12:17 PM   Printed: 05/19/99 9:02
AM   Page 234 of 32
Write a program named 
PAUSE
 that stores a value to A, an
equation to 
Y
1
, graphs 
Y
1
 using standard 
WINDOW 
values
(
ZStandard
), pauses, and then displays A.
PROGRAM:PAUSE
:2"A
:FnOff
:"X+A""Y
1
:ZStandard
:Pause
:Disp "A=",A
:Pause
 
Lbl and Goto   
Lbl and Goto   8
 
 9 and 0
 9 and 0
Lbl
 (label) and 
Goto
 are used together for branching.
Lbl
 gives a name (label) to a particular location in a program.
label can be one or two text characters (
A
 through 
Z
0
 through
99
).
:Lbl
 label
Goto
 causes the program to branch to label when 
Goto
 is
encountered.
:Goto
 label
Write a program named 
SQUARE2
 that asks for an input, A,
squares A, and then displays A until A‚100.
PROGRAM:SQUARE2
:Lbl 99
:Input A
:If A|100
:Stop
:Disp A
2
:Pause
:Goto 99
³
³
Press 
b
 to get to next
screen.
For FnOff and Y
1
,
press 
-
 
}
 2   1.
For ZStandard,
press 
(
 6.
Press 
b
 to end
execution.
Press 
b
after answer is
displayed.