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File:  [LON-CAPA] / loncom / homework / templates / CustomResponse.problem
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Tue Jul 18 17:24:39 2006 UTC (17 years, 9 months ago) by www
Branches: MAIN
CVS tags: version_2_3_X, version_2_3_2, version_2_3_1, version_2_3_0, version_2_2_X, version_2_2_99_1, version_2_2_99_0, version_2_2_2, version_2_2_1, version_2_2_0, version_2_1_99_3, version_2_1_99_2, version_2_1_99_1, HEAD
Document custom response

<problem>
<startouttext />Accept an answer of around 90 or -90<endouttext />
  <customresponse answerdisplay="something near 90 or -90">
    <answer type="loncapa/perl">
# We do not want a vector
if ($submission=~/\,/) { return 'ANS_CNT_NOT_MATCH'; }
# No units needed
if ($submission=~/^\d+\s+\w+$/) { return 'UNIT_NOTNEEDED'; }
# Need a numerical answer here
if ($submission!~/^\d+$/) { return 'WANTED_NUMERIC'; }
$difference=abs(90-abs($submission));
if ($difference==0) { return 'EXACT_ANS'; }
if ($difference < 0.001) { return 'APPROX_ANS'; }
return 'INCORRECT';
    </answer>
    <textline />
  </customresponse>
</problem>
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