std::basic_ostream::write

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C++
 
输入/输出库
I / O操纵
C-风格的I / O
缓冲区
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Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf（过时了）
流
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Streams
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抽象
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Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
文件I / O
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File I/O
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basic_ifstream
basic_ofstream
basic_fstream
字符串I / O
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String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
阵列的I / O
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istrstream（过时了）
ostrstream（过时了）
strstream（过时了）
类型
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streamoff
streamsize
fpos
Error类的接口
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Error category interface
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iostream_category（C++11）
io_errc（C++11）
 
std::basic_ostream
全局对象
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成员函数
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Member functions
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=（C++11）
格式化的输入
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Formatted input
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basic_ostream::operator<<
未格式化的输入
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Unformatted input
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basic_ostream::put
basic_ostream::write
定位
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Positioning
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basic_ostream::tellp
basic_ostream::seekp
杂项
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basic_ostream::flush
basic_ostream::swap（C++11）
会员类别
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basic_ostream::sentry
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operator<<(std::basic_ostream)
 
basic_ostream& write( const char_type* s, std::streamsize count );

Outputs characters from successive locations in the character array whose first element is pointed to by s. Characters are inserted into the output sequence until one of the following occurs:

  • exactly count characters are inserted
  • inserting into the output sequence fails (in which case setstate(badbit) is called)
此功能是一个未格式化的输出功能：它开始执行构造一个对象的类型sentry，刷新tie()'d的输出缓冲区，如果必要的检查流错误。项目建成后，false如果哨兵对象返回，该函数返回没有尝试任何输出。如果抛出一个异常，然后在输出的ios :: badbit（exceptions()&badbit != 0被抑制，除非，在这种情况下，它被重新抛出异常）
Original:
This function is an unformatted output function: it begin execution by constructing an object of type sentry, which flushes the tie()'d output buffers if necessary and checks the stream errors. After construction, if the sentry object returns false, the function returns without attempting any output. If an exception is thrown during output, then ios::badbit is set (the exception is suppressed unless exceptions()&badbit != 0, in which case it is rethrown)
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目录

[编辑] 参数

s - pointer to the character string to write
count - number of characters to write

[编辑] 返回值

*this

[编辑] 注释

此功能不超载的类型signed char或unsigned char，不同的是格式化的<div class="t-tr-text">操作符operator <<
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operator<<
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This function is not overloaded for the types signed char or unsigned char, unlike the formatted
操作符operator <<
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operator<<
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</div>
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Also, unlike the formatted output functions, this function does not set the failbit on failure.

[编辑] 例外

If an exception occurs during output and exceptions()&badbit != 0, rethrows that exception.

If output fails and exceptions()&badbit != 0, throws ios_base::failure.

[编辑] 为例

This function may be used to output object representations, i.e. binary output 

#include <iostream>
int main()
{
    int n = 0x41424344;
    std::cout.write(reinterpret_cast<char*>(&n), sizeof n);
    std::cout << '\n';
}

Output: 

DCBA

[编辑] 另请参阅
插入字符数据
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inserts character data
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（函数） [edit]
插入一个字符
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inserts a character
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（公共成员函数） [edit]
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