How to define a multiline wstring with content from another file

Question

I would like to define the content of a file in a wstring, so I can print it with an ofstream later on.

Example:

// Working
std::wstring file_content=L"€";

// Working
file_content=L"€"
L"€"
L"€";

// NOT Working
file_content=L"€"
L"€""
L"€";

// Working
file_content=LR"SOMETHING(multiline
with
no
issues)SOMETHING";

For some reason, the last solution is not working for me WHEN I paste in the file content (Multibyte).

Errors:

E0065 expected a ';'

E2452 ending delimiter for raw string not found

Answer 1

You need to escape double-quote characters inside of a string literal, eg:

// Working
file_content=L"€"
L"€\"" // <--
L"€";

Alternatively, use a raw string literal instead, which does not require its characters to be escaped, eg:

// Working
file_content=L"€"
LR"(€")" // <--
L"€";

Answer 2

std::wstring file_content=LR"SOMETHING(
€
€"
€
)SOMETHING";

Here, SOMETHING is something not found in the string and not required but it enables you to use " inside the multiline string literal without having to escape it.