do something
end
ErrorDetected StatusOK StatusOK
DeMorgen DeMorgen
Pascal
if not DisplayOK or not PrinterOK then
, Pascal DeMorgen
if not DisplayOK and PrinterOK then
if else
DeMorgen and or and or
17 l DeMorgen
17 1 DeMorgen
not A and not B not(A or B)
not A and B not(A or not B)
A and not B not(not A or B)
A and B not (not A and not B)
Not A or not B not(A and B)
Not A or B * not(A and not B)
A or not B not (not A and B)
A or B not (not A and not B)
*
17.1.4
, C :
if ( a< b = = c = =d )
( a< b )= =( c = =d ) ( ( a<b ) = = c ) = = d?