cout<<R"(("",'\n','\a','\t''\n')";
The string wrapped in R"()" is the original character, no escape sequence, spaces and carriage returns are included.
Raw strings end when they encounter the first )", what if the string contains )"? For example:
cout << R"(abcde)","fghigk)";
The solution is to add any number of symmetrical characters between " and (,) and " to define the delimiter, but spaces, opening brackets, closing brackets, slashes, and control characters (such as tabs and newlines) Except, as follows:
cout << R"!(abcde)","fghigk)!";
