Namespaces
Variants
Views
Actions

std::basic_ios<CharT,Traits>::rdstate

From cppreference.com
< cpp‎ | io‎ | basic ios
 
 
 
 
iostate rdstate() const;

Returns the current stream error state.

Contents

[edit] Parameters

(none)

[edit] Return value

current stream error state. It is a bitmask type and can be a combination of the following constants:

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

[edit] Example

#include <iostream>
#include <sstream>
 
int main()
{
    std::ostringstream stream;
 
    if (stream.rdstate() == std::ios_base::goodbit)
        std::cout << "stream state is goodbit\n";
 
    stream.setstate(std::ios_base::eofbit);
 
    // check state is exactly eofbit (no failbit and no badbit)
    if (stream.rdstate() == std::ios_base::eofbit)
        std::cout << "stream state is eofbit\n";
}

Output:

stream state is goodbit
stream state is eofbit

[edit] See also

sets state flags
(public member function) [edit]
modifies state flags
(public member function) [edit]