Averages/Arithmetic mean: Difference between revisions
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(Fix wrong use of 'tee' in [[UnixPipes. Add UNIX Shell) |
m (→{{header|UNIX Shell}}: Do not exit when outside of subshell.) |
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=={{header|UNIX Shell}}== |
=={{header|UNIX Shell}}== |
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This example uses <tt>expr</tt>, |
This example uses <tt>expr</tt>, so it only works with integers. It checks that each string in the list is an integer. |
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<lang bash>mean() { |
<lang bash>mean() { |
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shift |
shift |
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done |
done |
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expr $sum / $count) |
expr $sum / $count) |
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else |
else |
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echo 0 |
echo 0 |
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} |
} |
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printf "test 1: "; mean |
printf "test 1: "; mean # 0 |
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printf "test 2: "; mean 300 |
printf "test 2: "; mean 300 # 300 |
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printf "test 3: "; mean 300 100 400 |
printf "test 3: "; mean 300 100 400 # 266 |
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printf "test 4: "; mean -400 |
printf "test 4: "; mean -400 400 -1300 200 # -275 |
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printf "test 5: "; mean - |
printf "test 5: "; mean - # expr: syntax error |
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printf "test 6: "; mean 1 2 A 3 # expr: non-numeric argument</lang> |
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=={{header|Ursala}}== |
=={{header|Ursala}}== |
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