问题
It's a familiar fact that in C you can write "a" "b" and get "ab". This is discussed in the C11 standard:
In translation phase 6, the multibyte character sequences specified by any sequence of adjacent character and identically-prefixed string literal tokens are concatenated into a single multibyte character sequence.
The phrase "character and..." would seem to suggest you can get the same results by writing 'a' "b", but I've never come across that usage and GCC and the Microsoft compiler both reject it. Am I missing something?
回答1:
No, maybe we're getting a wrong meaning out of the statement made there.
Let me quote from C11, chapter §5.1.1.2, Translation phases, paragraph 6,
- Adjacent string literal tokens are concatenated.
Here, we don't have any confusion between char and string literals, it's clearly mentioned about string literals only.
来源：https://stackoverflow.com/questions/30664664/adjacent-character-and-string-literal-tokens