a) logical_or<T> f;
b) logical_and<T> f;
c) logical_not<T> f;
d) negate<T> f;
1 thought on “Which of the following is a logical unary functor?”
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a) logical_or<T> f;
b) logical_and<T> f;
c) logical_not<T> f;
d) negate<T> f;
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c
Explanation: logical_and and logical_or requires two arguments to act upon whereas negate and logical_not requires only one argument but negate also produces non-logical results like negate of a number, therefore, it is not logical hence logical_not f; is an only logical functor.