Tell where escaped hexadecimal ends in a string [duplicate]

Answer 1

Hex escape sequence has no character limit so - since parser is greedy - it grabs all hex digits it can get. C spec excerpt:

hexadecimal-escape-sequence:
    \x hexadecimal-digit
    hexadecimal-escape-sequence hexadecimal-digit

hexadecimal-digit: one of
    0 1 2 3 4 5 6 7 8 9
    a b c d e f
    A B C D E F

To remedy that - split your string into 2 consecutive and they will be later joined (in translation phase #6 ;-). So instead of:

printf("10\xF8Celsius");

use:

printf("10\xF8" "Celsius");