Questions of this subject!.
|1)List the various error recovery strategies for a lexical analysis||0||0||2|
|2) How many error levels are available in PHP?||1||0||1|
|3)What is derivation tree?||1||0||1|
|4)Consider the first-order logic sentence φ ≡ ∃s∃t∃u∀v∀w∀x∀y ψ(s,t, u, v, w, x, y) where ψ(s,t, u, v, w, x, y) is a quantifier-free first-order logic formula using only predicate symbols, and possibly equality, but no function symbols. Suppose φ has a model with a universe containing 7 elements. Which one of the following statements is necessarily true?||0||0||1|