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

std::ios_base::iostate exceptions() const;	(1)
void exceptions( std::ios_base::iostate except );	(2)

Gets and sets the exception mask of the stream. The exception mask determines the error states on occurrence of which the stream throws exception of type failure.

1) Returns the exception mask.

2) Sets the exception mask to except.

Parameters

except

exception mask

Return value

1) The current exception mask.

2) (none)

Notes

Example

#include <iostream>
#include <fstream>
 
int main() 
{
    int ivalue;
    try {
        std::ifstream in("in.txt");
        in.exceptions(std::ifstream::failbit);
        in >> ivalue;
    } catch (std::ios_base::failure& fail) {
        // handle exception here
    }
}

© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/io/basic_ios/exceptions