// If / else
// Logical OR	(  || )
// Logical AND	( && )
// Strings and string functions, 
// Passing variables by reference

// Returns the number of days in a month
int
DaysInMonth(
   int		Month,
   int		Year)
{
   int		Days;

   // Check for out of range 
   if (Month < 1 || Month > 12)
      Days = 0;

   else if (Month == 4 || Month == 6 || 
            Month == 9 || Month == 11)
      Days = 30;

   else if (Month == 2) 
   {
      Days = 28;
      // if year is divisible by 4, and 
      //   NOT a century year or 
      //   a century year divisible by 400			   
      if (Year % 4 == 0 && 
            (Year % 100 != 0 || Year % 400 == 0))
         ++Days;
   }
   else
      Days = 31;

   return Days;	
}


bool DateToStr(
   int          Day,
   int          Month,
   int          Year,
   string       &Date)	
   // parameter Date passed by reference
{
   bool         
   RetVal = false;
   
   string
   Months = "JanFebMarAprMayJunJulAugSepOctNovDec";
   
   int
   MonthDays = DaysInMonth(Month, Year);

   if (MonthDays > 0 && Day > 0 && 
         Day <= MonthDays)
   {
      Date =   
         StrMid(Months, (Month - 1) * 3 + 1, 3) + 
         " " +
         StrMake(Day) + ", " + 
         StrMake(Year);

      RetVal = true;
   }
	
   return RetVal;	    	
}

string		Date;

DateToStr(28, 2, 1999, Date);

return Date;