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 which error states trigger exceptions of type failure.
except. If the stream has an error state covered by the exception mask when called, an exception is immediately triggered.| except | - | exception mask |
#include <iostream>
#include <fstream>
int main()
{
int ivalue;
try {
std::ifstream in("in.txt");
in.exceptions(std::ifstream::failbit); // may throw
in >> ivalue; // may throw
} catch (const std::ios_base::failure& fail) {
// handle exception here
std::cout << fail.what() << '\n';
}
}Possible output:
basic_ios::clear: iostream error
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