Question

what is different between characters constant and string constant ​

Answer 1

Answer:

A character constant like '!' represents a single character. A string literal between double quotes usually represents multiple characters. A string literal like "!" seems to represent a single character, but it actually contains two: the ! you requested, and the \0 which terminates all strings in C.

Answer 2

Answer:

A character constant like '!' represents a single character. A string literal between double quotes usually represents multiple characters.

Explanation:

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