What does \x mean in C/C++?

Question

Example:

char arr[] = \"\\xeb\\x2a\";

BTW, are the following the same?

\"\\xeb\\x2a\" vs. \'\\xeb\\x2a\'<

Answer 1

\x indicates a hexadecimal character escape. It's used to specify characters that aren't typeable (like a null '\x00').

And "\xeb\x2a" is a literal string (type is char *, 3 bytes, null-terminated), and '\xeb\x2a' is a character constant (type is int, 2 bytes, not null-terminated, and is just another way to write 0xEB2A or 60202 or 0165452). Not the same :)