c++ - 在下一个之前检测行尾

Question

我不知道如何在以下代码中的下一行之前“缓冲”一行输入(并对该行执行一些操作，例如在末尾插入换行符):

#include <iostream>

class Test {
  public:
    template<class T>
    Test& operator<< (T&& anything) {
        std::cout << anything;
        return *this;
    }

};

int main() {
    Test myobj;

    myobj << "hello" << "this is cool";
    // How to insert a newline here?        
    myobj << "but" << "this is NOT cool";
}

我希望能够检测到何时行

myobj << "hello" << "this is cool";

在执行下一个之前已经完成。

Answer 1

`"\n"` 

如下所示为您做:

int main() {
    Test myobj;

    myobj<< "hello" << "this is cool<<"\n"";
    // How to insert a newline here?        
   myobj << "but" << "this is NOT cool";
}

否则你使用std::endl如下

myobj << "hello" << "this is cool<<std::endl;