IBM 5100 - Page 155

(
("""
--,/
C't
C
An Example of Function Editing
In this example, the user-defined function AVERAGE is used to show how the
methods used to revise and display functions work:
VAVERAGE X~·~~~~~~~~~~~~~~~~~~~Define the function.
[1] 'THIS FUNCTION CALCULATES AVERAGES'
[2] +/X+(+/X~X)V
AVEI~AGE 2 4· 6 B~.~~~~~~~~~~-~~~~-Executeandtestthefunction.
THIS FUNCTION CALCULATES AVERAGES
'VAVERAGE[:I.,7] 'THE AVEI~AGE IS· ..... ---------Insertastatement.
[1 , B:1 [:1.0]· Display statement 1.
[:1.] · THIS FUNCTION CALCULATES AVERAGES .~
[.I.] 'THIS FUNCTION CALCULATES AVERAGES AND SUMS' Statement 1 was edited
~------------------
[2] [3] 'THE BUM IS' to look like this.
[",.] +/XV ~~--- ___ ~~~~~~~~~~~~_
Add statements 3 and 4.
VAVERAGE[L1J'V~
'V AVERAGE X --~~~~~~--~--~~-Display the function.
[1] 'THIS FUNCTIDN CALCULATES AVERAGES AND SUMS'
[2] 'THE AVERAGE IS'
[3] +/X+(+/X=X)
[l.f.J 'THE SUM IS'
[5J +/X
V
AVERAGE 2 '+ 6 B ...... .--~~~~~~~~~~~~---Executeaverage.
THIS FUNCTION CALCULATES AVERAGES AND SUMS
THE AVERAGE
IS
5
THE SUM IS
20
VAVERAGE [~5J +/X~·?)X ...... ~~--~~-~~~~-~-Replace statement 3.
[ 4· ] I:: 1J.1::1 'II Delete statement 1.
[,2] I: 0 :1 AVE I~AGEIJ.SlJM XV.. Replace the function header.
[ :L :I
[2J
[3J
[4·]
THE
c·
.... }
THE
20
[3J
[1+ :I
VAVERAGE~SUM[rJ]V ... ~~~-~~-----~-~~-Display the function.
'V AVERAGEt.\SUM X
'THE AVERAGE IS'
+/X+pX
'THE SUM IS'
+/X
AVERAGEIJ.SUM 2 ~ 6 8
AVEI~AGE IS
SUM IS
VAVEI~AGEIlSUM [[]3JV .... _____________ .....-_Display the function from
'THE SUM IS' statement 3 to the end.
+/X
151