#include <iostream>

using namespace std;

class Date
{
public:
	Date ( int, int, int );

	void displayData ();

	void setDay ( int );
	int getDay ();

	void setMonth ( int );
	int getMonth ();

	void setYear ( int );
	int getYear ();

private:
	int day;
	int month;
	int year;
};

#include "Date.h"

using namespace std;

Date::Date(int dataDay, int dataMonth, int dataYear)
{
	setDay ( dataDay );
	setMonth ( dataMonth );
	setYear ( dataYear );
}

void Date::displayData ()
{
	cout << Date::getDay () << " / " << Date::getMonth () << " / " << Date::getYear () << endl;
}

///////////////////////////////////////////////////
void Date::setDay( int dataDay )
{

	if ( dataDay >=  1 , dataDay <=  30  )
	day = dataDay;
		
	if ( dataDay <  1 , dataDay >  30  )
	{
		cout << "Day \"" << day << "\" can be in 1-30 diapazon"
			<< "\n day set 1" << endl;
		day =  1 ;
	}
}
///////////////////////////////////////////////////

int Date::getDay ()
{
	return day;
}

///////////////////////////////////////////////////
void Date::setMonth( int dataMonth )
{
	if ( dataMonth >=  1 , dataMonth <=  12  )
		month = dataMonth;
	if ( dataMonth <  1 , dataMonth >  12  )
	{
		cout << "Month \"" << month << "\" can be in 1-12 diapazon"
			<< "\n month set 1" << endl;
		month =  1 ;
	}
}
///////////////////////////////////////////////////

int Date::getMonth ()
{
	return month;
}

///////////////////////////////////////////////////
void Date::setYear( int dataYear )
{
	if ( dataYear >=  1 , dataYear <=  3000  )
		year = dataYear;
	if ( dataYear <  1 , dataYear >  3000  )
	{
		cout << "Year \"" << year << "\" can be in 1-3000 diapazon"
			<< "\n year set 2010" << endl;
		year =  2010 ;
	}
}
///////////////////////////////////////////////////

int Date::getYear ()
{
	return year;
}

#include "Date.h"

using namespace std;

int main ()
{
	Date celendar ( - 1 , - 1 , - 1  );

	celendar.displayData ();
	//cout << celendar.getDay () << " / " << celendar.getMonth () << " / " << celendar.getYear () << endl;

	return  0 ;
}

void Date::setDay( int dataDay )
{
if ( dataDay >=  1 , dataDay <=  30  )
day = dataDay;

if ( dataDay <  1 , dataDay >  30  ) //! \bug, но, тем не менее...
...
}

#include <iostream>

using namespace std;

class Date
{
public:
	Date ( int, int, int );

	void displayData ();

	void setDay ( int );
	int getDay ();

	void setMonth ( int );
	int getMonth ();

	void setYear ( int );
	int getYear ();

private:
	int day;
	int month;
	int year;
};

	void displayData () const;

	int getDay () const;
	int getMonth () const;
	int getYear () const;

if ( dataDay <  1 , dataDay >  30  )

if ( dataDay <  1  || dataDay >  30  )

if ( dataDay <  1  or dataDay >  30  )

if ( dataDay <  1 , dataDay >  30  )

cout << setprecision(  6  ) << fixed << static_cast< double > ( a ) / static_cast< double > ( b ) << endl;

#include <iostream>
using namespace std;

int main ()
{
	int counter =  1 ;
	int number;
	int largest =  0 ;

	while ( counter <=  10  )
	{
		cout << "Enter numb: ";
		cin >> number;
		
		if ( number > largest )
			largest = number;
		counter++;
	}

	cout << "Largest is: " << largest << endl;
}

#include <iostream>
using namespace std;

int main ()
{
	int counter =  1 ;
	int number;
	int largestMax =  0 ;
	int largestMin =  0 ;

	while ( counter <=  10  )
	{
		cout << "Enter numb: ";
		cin >> number;
		
		if ( number > largestMin )
		{
			if ( number < largestMax )
			largestMin = number;
		}

		if ( number > largestMax )
		{
			largestMin = largestMax;
			largestMax = number;
		}
		counter++;
	}

	cout << "LargestMax is: " << largestMax
		<< "\nLargestMin is: " << largestMin << endl;

return forumnax :)
}