Question

I’m writing a C/C++ program that involves putting a hex representation of a number into a string and I’m confused as to how \x works. I’ve seen examples where people have written things such as “\xb2”. In this case, how does the program know if you want the hex of b followed by the number 2 or if you want the hex of b2? Additionally, when it stores this into memeory does it save the “\x” characters or does it just save the hex representation?

Answer 1

From the C99 standard (6.4.4.4):

Each octal or hexadecimal escape sequence is the longest sequence of characters that can
constitute the escape sequence.