15 lines
220 B
Bash
15 lines
220 B
Bash
eval_with_x() {
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set -- "`x=$2; eval "$1"`" "`x=$3; eval "$1"`"
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expr "$2" - "$1"
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}
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eval_with_x '
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# compute 2 ** $x
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p=1
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while test $x -gt 0; do
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p=`expr $p \* 2`
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x=`expr $x - 1`
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done
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echo $p
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' 3 5
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# Prints '24'
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