NAME¶

std::basic_ios::setstate - std::basic_ios::setstate

Synopsis¶

void setstate( iostate state );

Sets the stream error flags state in addition to currently set flags. Essentially
calls clear(rdstate() | state). May throw an exception.

Parameters¶

stream error state flags to set. It can be a combination of the following
constants:

state - Constant Explanation
goodbit no error
badbit irrecoverable stream error
failbit input/output operation failed (formatting or extraction error)
eofbit associated input sequence has reached end-of-file

Return value¶

(none)

Example¶

// Run this code

#include <iostream>
#include <sstream>

int main()
{
std::ostringstream stream;

if (!stream.fail()) {
std::cout << "stream is not fail\n";
}

stream.setstate(std::ios_base::failbit);

if (stream.fail()) {
std::cout << "now stream is fail\n";
}

if (!stream.good()) {
std::cout << "and stream is not good\n";
}
}

Output:¶

stream is not fail
now stream is fail
and stream is not good

See also¶

rdstate returns state flags
(public member function)
clear modifies state flags
(public member function)