Can someone explain the meaning of ! in pseudo-code to me? I understand that it represents factorial, but for some reason I am having trouble translating it.
For example:
I came across this code snippet:
if (operation!= ’B’ OR operation != ’D’ OR operation!= ’W’) then
print "Invalid Operation"
What is the significance of the ! symbol in this context?
!= denotes inequality, while ! typically signifies either the opposite or negation.
Essentially, "not" is what it signifies. Your example code can be understood as:
if (operation != ’B’ OR operation != ’D’ OR operation != ’W’)
This translates to:
"If the operation is not equal to 'B' or is not equal to 'D' or is not equal to 'W'"
Usually,
!represents not
||representslogicalor
&&representslogicaland
For example:
!false == true ( == expresses equality )
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