// Example from Deitel book
// Testing error states.
#include <iostream>

using std::cout;
using std::endl;
using std::cin;

int main()
{
   int integerValue;

   // display results of cin functions
   cout << "Before a bad input operation:"
        << "\ncin.rdstate(): " << cin.rdstate()
        << "\n    cin.eof(): " << cin.eof()
        << "\n   cin.fail(): " << cin.fail()
        << "\n    cin.bad(): " << cin.bad()
        << "\n   cin.good(): " << cin.good()
        << "\n\nExpects an integer, but enter a character: ";

   cin >> integerValue; // enter character value
   cout << endl;

   // display results of cin functions after bad input
   cout << "After a bad input operation:"
        << "\ncin.rdstate(): " << cin.rdstate()
        << "\n    cin.eof(): " << cin.eof()
        << "\n   cin.fail(): " << cin.fail()
        << "\n    cin.bad(): " << cin.bad()
        << "\n   cin.good(): " << cin.good() << endl << endl;

   cin.clear(); // clear stream

   // display results of cin functions after clearing cin
   cout << "After cin.clear()"
        << "\ncin.fail(): " << cin.fail()
        << "\ncin.good(): " << cin.good() << endl;

   return 0;

} // end main