Limit the Length of a Hexadecimal Escape Sequence in a C-String [duplicate]

Question

In a string literal, how can I follow a hexadecimal escape sequence immediately with a literal character that can be interpreted as a hexadecimal digit? For example, if I write this literal ...

"BlahBlah\x04BlahBlah"

... the 'B' immediately following the '4' will be interpreted as part of the hexadecimal escape, because it is a valid hexadecimal digit.

How can I write a string literal that represents the string that the above would represent if the '4' were taken as the last character of the hex escape?

Answer 1

As you noticed, C is pretty dumb when it comes to hex escape sequences in string literals. Fix it by using string concatenation, like this:

"BlahBlah\x04" "BlahBlah"

It is good practice to never have any trailing characters behind such a hex escape sequence. Always end the string as in this example.