Date: 2018nov16 Date: 2026aug8 Language: C++ Q. C/C++: How should I quote a regular expression in C++ A. Use raw strings! They have been in the language since C++11. In a raw string, escape characters are not processed. For example:

main() { const char *regex_raw = R"([\r\n]+)"; const char *regex_old = "[\\r\\n]"; }

As you can see the backslashes don't need to be escaped in the raw string. This is great to avoid typing but even better it improves clarity. ---- You can also use raw strings to embed multi-line scripts from another language in your program:

const char *code = R" line one line two ";

You can use another delimiter, eg:

const char *saying = R|He said "hello"|;

Since C++23 you can use #embed to pull in binary files - like an image.