basic_ios::fail
Indicates the status of rdstate & failbit.
bool fail( ) const;
Return Value
1 or true if rdstate & failbit is nonzero, otherwise 0 or false.
Remarks
boolalpha specifies the format of a bool variable.
Example
// basic_ios_fail.cpp
// compile with: /EHsc
#include <iostream>
int main( void )
{
using namespace std;
bool b = cout.fail( );
cout << b << endl;
}
Output
0
Requirements
Header: <ios>
Namespace: std