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Std::basic_streambuf::sputn 是 c++ i/o 流库中 streambuf 类的核心成员函数之一。 它负责将一个字符序列（即一块数据）写入到流缓冲区中。 它尝试将 n 个字符从给定指针 s. My reading of the standard (i looked at c++11, c++14, and the current draft; The default definition of xsputn in streambuf writes characters from the array pointed to by s into the controlled output sequence, until either n characters have been written or the end of the.

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2) writes count characters to the output sequence from the character array whose first element is pointed to by s. Achieved by other means permits bulk i/o without intermediate buffering: Learn about the c++ stringbuf sputn function, its syntax, and how to use it for efficient string manipulation in c++ programming.

1) calls xsputn ( s, count ) of the most derived class.

All were identical) suggests that there's no requirement that sputn get called in the zero. This short example writes a sentence to a file using streambuf 's member sputn. That is how std::ofstream::write () simply passes the pointer to the suitable system call in some. Using sputn directly alongside functions like std::cout << . can sometimes lead to unexpected behavior because sputn bypasses the standard formatting and manipulators.

Typical implementation of the std::basic_streambuf base class holds only the six chart* pointers and a copy of std::locale as data members. 本教程是c++ streambuf sputn基础知识,您将学习如何使用c++ streambuf sputn附完整代码示例与在线练习,适合初学者入门。

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