C++ Class Definition constructor, a mutator, and an accessor the two functions

#include <iostream>
#include <iomanip>  // needed for formatting
using namespace std;
// declaration section
class Date//from   w  w w.j a v a  2s.c  o m
{
   private:
   int month;
   int day;
   int year;
   public:
   Date(int mm = 1, int dd = 1, int yyyy = 2014)  // inline constructor
   {month = mm; day = dd; year = yyyy;}
   void setDate(int mm, int dd, int yy)           // inline mutator
   {month = mm; day = dd; year = yy;}
   void showDate();                              // accessor
   bool isLeapYear();
   bool operator==(const Date&);
};
// implementation section
void Date::showDate()
{
   //show year in last two digits
   cout << "The date is " << setfill('0') << setw(2) << month << '/' << setw(2) << day << '/' << setw(2) << year % 100;
   cout << endl;
}
bool Date::isLeapYear()
{
   if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
      return true;   // is a leap year
   else
      return false;  // is not a leap year
   }
   bool Date::operator==(const Date& date2)
   {
      if (day == date2.day && month == date2.month && year == date2.year)
         return true;
      else
         return false;
}