#include <iostream>
#include <cstdlib>
#include <iomanip>
using namespace std;

int main()
{
	int i, j, k;   //uninitialized variables
	ios_base::fmtflags save = cin.flags();

	cout << "Input an integer in decimal: ";
	cin >> i;
	cout << "In decimal, the integer is " << i << ".\n\n";

	cout << "Input two integers in octal; leading 0 optional: ";
	cin >> oct >> i >> j;
	cout << "In decimal, the integers are " << i << ", " << j << ".\n\n";

	cout << "Input two integers in hexadecimal; leading 0x optional: ";
	cin >> hex >> i >> j;
	cout << "In decimal, the integers are " << i << ", " << j << ".\n\n";

	cout << "Input an integer in decimal: ";
	cin >> dec >> i;
	cout << "In decimal, the integer is " << i << ".\n\n";

	cout << "Input 3 integers in any base.\n"
		"Leading 0 for octal, 0x for hex, are now mandatory: ";
	cin >> resetiosflags(ios_base::basefield) >> i >> j >> k;

	cout << "In decimal, the integers are "
		<< i << ", " << j << ", " << k <<".\n";

	cin.setf(save, ios_base::basefield);
	return EXIT_SUCCESS;
}