原生字符串字面值

#include <string>
using namespace std;

int () {
    cout << R"(Hello, n everyone.)" << endl;
    string str = R"(I am
IAJAOP, 24
years old.n)";
    cout << str << endl;

    return 0;
}

Hello, n everyone.
I am
IAJAOP, 24
years old.n