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Decision tables: Difference between revisions
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→{{header|REXX}}: added a screen scraping for the possible responses. -- ~~~~
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* a method of allowing the user to quit the interrogation
<lang rexx>/*REXX pgm demonstrates a decision table and possible corrective actions*/
/*REXX pgm demonstrates a decision table and possible corrective actions*/
/*If this is part of a holistic solution, then the first question */
/*that should be asked: Are you having a problem with the printer?*/
Line 767 ⟶ 768:
do k=1 while act.k\==''
do j=1;
if d=='' then leave
if \datatype(d,'U') then iterate
if d\==ans.
if j==set then leave
end /*j*/
say pos.k
possible=possible+1 /*count num of possible solutions*/
end /*k*/
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return
end /*forever*/</lang>
'''output''' (a screen scraping using a DOS prompt window for the possible responses)
DECISION.REX is the REXX program that produced this output.
<pre style="height:50ex;overflow:scroll">
D:\►rexx decision
───────── (question 1 of 3) Does the printer not print?
n
───────── (question 2 of 3) Is there a red light flashing on the printer?
n
───────── (question 3 of 3) Is the printer unrecognized by the software?
n
No solutions given for the information supplied.
D:\►rexx decision
───────── (question 1 of 3) Does the printer not print?
n
───────── (question 2 of 3) Is there a red light flashing on the printer?
n
───────── (question 3 of 3) Is the printer unrecognized by the software?
y
Ensure printer software is installed.
D:\►rexx decision
───────── (question 1 of 3) Does the printer not print?
n
───────── (question 2 of 3) Is there a red light flashing on the printer?
y
───────── (question 3 of 3) Is the printer unrecognized by the software?
n
Check/replace ink.
D:\►rexx decision
───────── (question 1 of 3) Does the printer not print?
n
───────── (question 2 of 3) Is there a red light flashing on the printer?
yes
───────── (question 3 of 3) Is the printer unrecognized by the software?
yes
Ensure printer software is installed.
Check/replace ink.
D:\►rexx decision
───────── (question 1 of 3) Does the printer not print?
y
───────── (question 2 of 3) Is there a red light flashing on the printer?
no
───────── (question 3 of 3) Is the printer unrecognized by the software?
no
Check for paper jam.
D:\►rexx decision
───────── (question 1 of 3) Does the printer not print?
y
───────── (question 2 of 3) Is there a red light flashing on the printer?
n
───────── (question 3 of 3) Is the printer unrecognized by the software?
y
Check the power cable.
check the printer-computer cable.
Ensure printer software is installed.
D:\►rexx decision
───────── (question 1 of 3) Does the printer not print?
y
───────── (question 2 of 3) Is there a red light flashing on the printer?
y
───────── (question 3 of 3) Is the printer unrecognized by the software?
n
Check/replace ink.
Check for paper jam.
D:\►rexx decision
───────── (question 1 of 3) Does the printer not print?
y
───────── (question 2 of 3) Is there a red light flashing on the printer?
y
───────── (question 3 of 3) Is the printer unrecognized by the software?
y
check the printer-computer cable.
Ensure printer software is installed.
Check/replace ink.
D:\►
</pre>
=={{header|Ruby}}==
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