std::basic_ostream<CharT,Traits>::write

Behaves as an UnformattedOutputFunction . After constructing and checking the sentry object, outputs the characters from successive locations in the character array whose first element is pointed to by s

• exactly count characters are inserted
• inserting into the output sequence fails (in which case setstate(badbit) is called).

Parameters

Return value

*this

Exceptions

If an internal operation throws an exception, it is caught and badbit is set. If exceptions() is set for badbit

Notes

This function is not overloaded for the types signed char or unsigned char, unlike the formatted operator<<

Also, unlike the formatted output functions, this function does not set the failbit on failure.

When using a non-converting locale (the default locale is non-converting), the overrider of this function in std::basic_ofstream may be optimized for zero-copy bulk I/O (by means of overriding std::streambuf::xsputn

Example

#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).write("!\n", 2);
}

DCBA
This!

See also