54 lines
948 B
Plaintext
Executable File
54 lines
948 B
Plaintext
Executable File
# ++ and -- are not inc/dec operators on non-variables, they are + + and - - sequences
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( echo $(( --7 )) )
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( echo $(( ++7 )) )
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( echo $(( -- 7 )) )
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( echo $(( ++ 7 )) )
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#ash# ((++array[0] ))
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#ash# echo 1 $array
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#ash# (( ++ array[0] ))
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#ash# echo 2 $array
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#ash# (( ++a ))
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#ash# echo 1 $a
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#ash# (( ++ a ))
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#ash# echo 2 $a
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#ash# (( --a ))
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#ash# echo 1 $a
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#ash# (( -- a ))
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#ash# echo 0 $a
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a=0
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echo 5 $(( 4 + ++a ))
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echo 1 $a
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# this is treated as 4 + ++a
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echo 6 $(( 4+++a ))
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echo 2 $a
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a=2
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# this is treated as 4 - --a
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echo 3 $(( 4---a ))
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echo 1 $a
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a=1
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echo 4 $(( 4 - -- a ))
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echo 0 $a
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#ash# (( -- ))
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# -- is not a dec operator on non-variable, it is the - - sequence
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echo $(( ---7 ))
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( echo $(( -- - 7 )) )
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#ash# (( ++ ))
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# ++ is not a inc operator on non-variable, it is the + + sequence
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echo $(( ++7 ))
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( echo $(( ++ + 7 )) )
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echo -7 $(( ++-7 ))
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echo -7 $(( ++ - 7 ))
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echo 7 $(( +--7 ))
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echo 7 $(( -- + 7 ))
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