In some programming languages, an identifier is permitted to be a letter…
GATE · 1995 · CS · Question 1 subparts
In some programming languages, an identifier is permitted to be a letter following by any number of letters or digits. If L and D denote the sets of letters and digits respectively, which of the following expressions defines an identifier?
- A.
(L∪D)+
- B.
L(L∪D)*
- C.
(L.D)*
- D.
L.(L.D)*
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