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std::basic_ostream::write

性病：基本[医]Ostream：：写

basic_ostream& write( const char_type* s, std::streamsize count ​​

表现为UnformattedOutputFunction.在构造和检查哨兵对象之后，输出字符数组中第一个元素指向的连续位置的字符。s将字符插入到输出序列中，直到出现下列情况之一：

  • 一点儿没错count插入字符

  • 插入输出序列失败%28，在这种情况下setstate(badbit)称为%29

参数

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

返回值

*this...

注记

此函数不会对类型重载。signed char或unsigned char，与格式化的运算符<<

此外，与格式化的输出函数不同，此函数不设置failbit在失败的时候。

例外

如果在输出期间发生异常，则exceptions() & badbit != 0重新抛出那个异常。

如果输出失败，并且exceptions() & badbit != 0，抛ios_base::failure...

例

此函数可用于输出对象表示，即二进制输出。

二次

#include <iostream>
 
int main()
{
    int n = 0x41424344;
    std::cout.write(reinterpret_cast<char*>(&n), sizeof n) << '\n';
 
    char c[]="This is sample text.";
    std::cout.write(c,4)<<'\n';
}

二次

可能的产出：

二次

DCBA
This

二次

另见

operator<<(std::basic_ostream)inserts character data (function template)
putinserts a character (public member function)

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