// flushinput.cpp
// A test program to test flushing input specifically cin
// Last Modified: 20081208
 
#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
#include <exception>
#include <stdexcept>
#include <new>
using namespace std;
 
int main()
{
cout << "flushinput" << endl;
cout << "A test program to test flushing input specifically cin." << endl;
string input1 = "";
string input2 = "";
cout << endl;
cout << "There are 5 input tests:" << endl;
cout << "1. Type 1 or more characters and then press Enter." << endl;
cout << "2. Just hit Enter(don't type any characters, just press Enter)." << endl;
cout << "3. Signal EOF(don't type any characters, Linux - just press Ctrl+D. Windows - just press Ctrl+Z and then Enter)." << endl;
cout << "4. Type 1 or more characters and then Signal EOF and then press Enter(Windows - press Enter a second time)." << endl;
cout << "5. Type 1 or more characters and then Signal EOF twice(Windows - press Enter twice after signalling EOF twice)." << endl;
cout << endl;
cout << "Correct solution would be that the program waits for you to enter the 2nd input regardless of what you entered for the 1st input." << endl;
cout << "Incorrect solution would be that the program finishes without asking for the 2nd input." << endl;
cout << endl;
cout << "Enter 1st input: ";
getline(cin, input1);
cerr << endl;// Input tests 1 - 5: L - Linux, W - Windows		L   L   L   L   LW
cerr << "cin.bad()=" << cin.bad() << endl;// Results:			0	0	0	0	00
cerr << "cin.eof()=" << cin.eof() << endl;//					0	0	1	0	10
cerr << "cin.fail()=" << cin.fail() << endl;//					0	0	1	0	00
cerr << "cin.good()=" << cin.good() << endl;//					1	1	0	1	01
cerr << "input1.size()=" << input1.size() << "!" << endl;//		3	0	0	3	33
	if(!cin.good())// Input tests 3(Windows & Linux) & 5(Linux only) put cin into an error state.
	{
	cin.clear();// Reset the cin status flags to their default.
	}
cout << endl;
cout << "Enter 2nd input: ";
getline(cin, input2);
cout << "Program finished." << endl;
return 0;
}