初学循环if的问题 闰年2月28/29
程序代码：// Month Day Year Class
using namespace std;
#include <string>
class CMonthDayYear
{
public:
// Default Constructor for CMonthDayYear
CMonthDayYear(){ cout << "\nDefault MonthDayYear's Constructor is called!\n\n"; }
// Validate Facilitator
void ValidatingTheDate(int Month, int Day, int Year)
{
string NameOfMonth;
bool Check;
Check = true;
if ( Month < 1 || Month > 12 )
{
cout << "\nYour Input is : " << Month << "/" << Day << "/" << Year << "\n"
<< "INVALID input of month : *** " << Month << " *** OUT OF RANGE" << endl << endl;
Check = false;
} // End if of Month input check
if ( 1 <= Month <= 12 )
{
switch(Month)
{
case 1:
NameOfMonth = "January"; break;
case 2:
NameOfMonth = "February"; break;
case 3:
NameOfMonth = "March"; break;
case 4:
NameOfMonth = "April"; break;
case 5:
NameOfMonth = "May"; break;
case 6:
NameOfMonth = "June"; break;
case 7:
NameOfMonth = "July"; break;
case 8:
NameOfMonth = "August"; break;
case 9:
NameOfMonth = "September";break;
case 10:
NameOfMonth = "October"; break;
case 11:
NameOfMonth = "November"; break;
case 12:
NameOfMonth = "December"; break;
default:;
} // End of Switch number to nameofmonth
for ( int LeapYear = 1500; LeapYear <= 2500; LeapYear ++ )
{
if( (Month == 2) && (LeapYear % 4 == 0) && (Year == LeapYear) && (Day < 1 || Day > 29) )
{
cout << "\nYour Input is : " << Month << "/" << Day << "/" << Year << "\n"
<< "INVALID input in Leap Year month : *** " << NameOfMonth << " ***"
<< "\nYour input in month *** "
<< NameOfMonth << " *** is : " << Day << endl << endl;
Check = false;
/*
if ( Year == LeapYear )
{
if ( Month == 2 )
{
if ( Day < 1 || Day > 29 )
{
} // LeapYear's Feb 1-29
} // End if of Day Check on Feb.
} // LeapYear is the Year input
*/
} // End if of Day Check on Leap Year Feb.
else if ((Month == 2) && (LeapYear % 4 != 0) && (Day < 1 || Day > 28))
{
cout << "\nYour Input is : " << Month << "/" << Day << "/" << Year << "\n"
<< "INVALID input in month : *** " << NameOfMonth << " ***"
<< "\nYour input in month *** "
<< NameOfMonth << " *** is : " << Day << endl << endl;
Check = false;
} // End if of Day Check on Normal Year Feb.
} // End of For/If for checking leap year
if ( (Month == 1 || Month == 3 || Month == 5 || Month == 7 || Month == 8 || Month == 10 || Month == 12) && ( Day < 1 || Day > 31 ))
{
cout << "\nYour Input is : " << Month << "/" << Day << "/" << Year << "\n"
<< "INVALID input in month : *** " << NameOfMonth << " ***"
<< "\nYour input in month "
<< NameOfMonth << " *** is : " << Day << endl << endl;
Check = false;
} // End if of Day Check on long months
if ( (Month == 4 || Month == 6 || Month == 9 || Month == 11) && ( Day < 1 || Day > 30 ))
{
cout << "\nYour Input is : " << Month << "/" << Day << "/" << Year << "\n"
<< "INVALID input in month : " << NameOfMonth
<< "\nYour input in month *** "
<< NameOfMonth << " *** is : " << Day << endl << endl;
Check = false;
} // End if of Day Check on short months
} // End of month check for loop
if (Check)
cout << "\nYour Input is : " << Month << "/" << Day << "/" << Year
<< "\nThe Month is : " << NameOfMonth
<< "\nThe Day is : " << Day
<< "\nThe Year is : " << Year
<< "\n\n";
}
private:
};那个for不知道怎么用了 
把那个闰年二月或正常的二月拿出来都可以用， 放到for里就sb了。 那些判断没有错啊？ …… 自我感觉应该是没错， 现在想到的只有放码的位置了， 试了很多不同的放法都不行， 有前辈来指教一下吗？ 谢谢！！
PS： 初学C++初到这个网站，刚刚看到给分的问题， 这里问问题一定要分才可以吗？
[ 本帖最后由 nubore 于 2010-9-14 09:39 编辑 ]
