ostrstream 创建账户 std::ostrstream 在标头<strstream>定义 classostrstream:publicstd::ostream (C++98 弃用) (C++26 移除) 类ostrstream实现基于数组的流上的输出操作。它实际上将原生数组输入/输出设备实现(std::strstreambuf)包装到std::basic_ostream的高层接口中。
std::ios_base std::basic_osyncstream std::basic_ostream std::basic_iostream std::basic_ifstream std::basic_ofstream std::basic_fstream std::basic_istringstream std::basic_ostringstream std::basic_stringstream std::istrstream std::ostrstream std::strstream std::streamoff std::streamsize std::f...
std::basic_ifstream::is_open std::basic_ifstream::open std::basic_ifstream::rdbuf std::basic_ifstream::swap std::basic_ios std::basic_ios::bad std::basic_ios::basic_ios std::basic_ios::clear std::basic_ios::copyfmt std::basic_ios::eof ...
#include <iostream>#include <strstream>intmain(){{std::ostrstreams;// dynamic buffers<<1.23;std::cout<<s.str()<<'\n';s.freeze(false);}// destructor called, buffer deallocated{std::ostrstreams;s<<1.23;std::cout<<s.str()<<'\n';// buf.freeze(false);}// destructor called, memory...
在输入流最后加入 std::ends ，再调用 str() 返回的字符串后面就没有乱码了
std::ostrstream:: char*str(); (deprecated in C++98) (removed in C++26) Returns the pointer to the beginning of the buffer, after freezing it. Effectively callsrdbuf()->str(). Parameters (none) Return value Pointer to the beginning of the buffer in the associatedstd::strstreambufor a ...
freeze(false); char buf[10]; std::ostrstream user(buf, 10); // user-provided output buffer user << 1.23; // note: no std::ends std::cout.write(buf, user.pcount()); std::cout << '\n'; } 二次 产出: 二次 代码语言:javascript 复制 The size of the output is 11 and it ...
C++ 输入/输出库 std::ostrstream 定义于头文件 <strstream> class ostrstream : public std::ostream (C++98 中弃用) 类ostrstream 实现基于数组的流上的输出操作。它实际上将原生数组 I/O 设备( std::strstreambuf )包装到 std::basic_ostream 的高层接口中。 ostrstream 的典型实现仅保有一个非导出的...
The class ostrstream implements output operations on array-backed streams. It essentially wraps a raw array I/O device implementation (std: …
C++ 输入/输出库 std::ostrstream 定义于头文件 <strstream> class ostrstream : public std::ostream (C++98 中弃用) 类ostrstream 实现基于数组的流上的输出操作。它实际上将原生数组 I/O 设备( std::strstreambuf )包装到 std::basic_ostream 的高层接口中。 ostrstream 的典型实现仅保有一个非导出的...