What is exclamation

Answer 1

Do you mean what is the meaning of (!) The placement of the exclamation switches the condition or value to the opposite of the condition or value.

For example : !false == true

(They are equal) Cause its like saying NOT false which means it is true. So the condition is (true == true)

Answer 2

the negation of the term it is used with, as stated above, another example is : if a==b means that a is equal to b, then a!=b means that a is not equal to b, and so on.

Answer 3

!