Lexical Analysis

Question

printf("Hello);

In the statement given above,is there any lexical error or not ?

Comments

But

"Hello  -> is not a valid token?

Answer 1

Yes, there is a lexical error. 

"Hello); is NOT a valid string literal.

Answer 2

The above statement has no Lexical error.

If you think about a lexer as a finite state machine that accepts valid input strings, then errors are going to be any input strings that do not result in that finite state machine reaching an accepting state.

Comments

Venkat Sai  it means it is not a valid token  thts why  lexical error 

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yeah its not a valid token and hence a lexical error as this continues till the end of the program is considered as the same literal as there is no closing " and this cannot be tokenised

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Okay..Thanku