Texas Instruments TI-73 EXPLORER 用户手册

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 231 of 32

Write a program named 

 that tests an input value, X.

If X<0, then square it and store it to Y. If X‚0, then store it to

Y. Display X and Y.

PROGRAM:TESTELSE

:Input "X=",X

:If X<0

:Then

:X

2

"Y

:Else

:X"Y

:End

:Disp {X,Y}

:Pause

 

For(   8

 

Use 

 to control how many times a loop is repeated. A 

command loops to repeat the same group of commands

(block) and increments to control the number of times the loop

is repeated.
It executes commands in block through end, increasing

variable from begin by increment until variable>end.

increment is optional (default=1) and can be negative

(end<begin). end is a maximum or minimum value not to be

exceeded, which identifies the end of the loop. 

 identifies

the end of block. When variable>end, the program executes

each command following 

. 

 loops can be nested.

variable,begin,end[,increment]

block (while variable { end)

command

Write a program named 

 that displays A

2

, where

0=begin, 8 =end, and 2=increment.

PROGRAM:SQUARE

:For(A,0,8,2)

:Disp A

2

:Pause

:End

³

³

Press 

b

between results.