使用IOSTREAM在同一行输出和输入 [英] Output and Input at Same Line using IOSTREAM

问题描述

我想在同一个语句中使用 iostream 输入和输出运算符，不是为了用户更好，而是我尝试不成功的外观。

I want to use the iostream input and output operators in the same statement, not to be nicer to the user but the look I was trying not successfully obtained.

代码片段：

int value = 0;
std::cout << "Number 1: " << std::cin >> value << std::endl;

有没有办法只使用cin cout？

Is there any way to do this using only cin cout?

推荐答案

struct IO {
    template <typename T>
    const IO & operator << (const T & t) const {
        std :: cout << t;
        return *this;
    }

    template <typename T>
    const IO & operator >> (T & t) const {
        std :: cin >> t;
        return *this;
    }
};

IO () << "Number 1: " >> value;

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