C++ 多行字符串原始文字

Question

我们可以像这样用多行定义一个字符串:

const char* text1 = "part 1"
                    "part 2"
                    "part 3"
                    "part 4";

const char* text2 = "part 1\
                     part 2\
                     part 3\
                     part 4";

用原始文字怎么样，我都试过了，没有人工作

std::string text1 = R"part 1"+
                    R"part 2"+ 
                    R"part 3"+
                    R"part 4";

std::string text2 = R"part 1"
                    R"part 2" 
                    R"part 3"
                    R"part 4";

std::string text3 = R"part 1\
                      part 2\ 
                      part 3\
                      part 4";

std::string text4 = R"part 1
                      part 2 
                      part 3
                      part 4";

Answer 1

请注意，原始字符串文字由 R"( 和 )" 分隔(或者您可以通过在引号和括号之间添加字符来添加分隔符，如果您需要额外的“独特性”)。

#include <iostream>
#include <ostream>
#include <string>

int main () 
{
    // raw-string literal example with the literal made up of separate, concatenated literals
    std::string s = R"(abc)" 
                    R"( followed by not a newline: \n)"
                    " which is then followed by a non-raw literal that's concatenated \n with"
                    " an embedded non-raw newline";

    std::cout << s << std::endl;

    return 0;
}