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  1. #!/bin/bash
  2. Function addem
  3. {
  4. If [ $# -eq 0 ] || [ $# -gt 2 ]
  5. then
  6.  echo -1
  7. elif [ $# -eq 1 ]
  8. then
  9.  echo $[ $1 + $1 ]
  10. else
  11.  echo $[ $1 + $2 ]
  12. fi
  13. }
  14. echo –n “adding 10 and 15:”
  15. value=$(addem 10 15)
  16. echo $value
Success #stdin #stdout 0.03s 26052KB
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Standard input is empty
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Function addem
{
If [ $# -eq 0 ] || [ $# -gt 2 ]
then
 echo -1
elif [ $# -eq 1 ]
then
 echo $[ $1 + $1 ]
else
 echo $[ $1 + $2 ]
fi
}
echo –n “adding 10 and 15:”
value=$(addem 10 15)
echo $value
https://ideone.com/2ujx4z
language:
PHP (php 7.3.5)
created:
6 days ago
visibility:
public

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