What is a C token?

Question

I've been solving question for GATE exams. I don't know about how to count tokens. I referred in many books and online. but couldn't find the answer.

please tell, how many tokens are present in the following program?

printf("i = %d, &i = %x", i, &i);

thanks in advance.

BTW, stop referring that (VK Mehta?) book. `%x` is all wrong here. — Sourav Ghosh, Oct 28 '17 at 16:27
A C token is a basic C language element. i.e. `printf` is a token of **identifier** type (specifically the name of the function to call), `(` (the left parethesis) is a **punctuation** token and `"i = %d, &i = %x"` is a **string** token ... — Frankie_C, Oct 28 '17 at 16:29
I recently found an answer on stack overflow at https://stackoverflow.com/questions/12873757/calculating-tokens-in-c-statement — Mahesh Dudhnale, Oct 28 '17 at 16:33
@Frankie_C , thanks I was counting the delimiters of strings as separate tokens — Mahesh Dudhnale, Oct 28 '17 at 16:37
actually what he asks is correct, but he is not conforming the politics of Stack Overflow ... — alinsoar, Oct 28 '17 at 17:16

alinsoar · Answer 1 · 2017-10-29T12:43:26.837

0

The tokens are atomic units that are present in annex A of ISO 9899 and they are created by the lexer.

Folllow the Backus-Naur form from the annex A to see how many tokens there are and what types they have. All the best ;)

edited Oct 29 '17 at 12:43

answered Oct 28 '17 at 17:14

alinsoar

1 Answers1