#include <bits/stdc++.h>
using namespace std;
bool laNamNhuan(int nYear)
{
if ((nYear % 4 == 0 && nYear % 100 != 0) || nYear % 400 == 0)
{
return true;
}
return false;
}
int tinhSoNgayTrongThang(int nMonth, int nYear)
{
int nNumOfDays;
switch (nMonth)
{
case 1:case 3:case 5:case 7:case 8:case 10:case 12:
nNumOfDays = 31;
break;
case 4:case 6:case 9:case 11:
nNumOfDays = 30;
break;
case 2:
if (laNamNhuan(nYear))
{
nNumOfDays = 29;
}
else
{
nNumOfDays = 28;
}
break;
}
return nNumOfDays;
}
bool laNgayHopLe(int nDay, int nMonth, int nYear)
{
bool bResult = true;
if (!(nYear > 0 && nMonth))
{
bResult = false;
}
if (!(nMonth >= 1 && nMonth <= 12))
{
bResult = false;
}
if (!(nDay >= 1 && nDay <= tinhSoNgayTrongThang(nMonth, nYear)))
{
bResult = false;
}
return bResult;
}
void timNgayHomSau(int& nDay, int& nMonth, int& nYear)
{
nDay++;
if (nDay > tinhSoNgayTrongThang(nMonth, nYear))
{
nDay = 1;
nMonth++;
if (nMonth > 12)
{
nMonth = 1;
nYear++;
}
}
}
int main()
{
int nDay, nMonth, nYear;
cout << "Ngay: ";
cin >> nDay;
cout << "Thang: ";
cin >> nMonth;
cout << "Nam: ";
cin >> nYear;
if (laNgayHopLe(nDay, nMonth, nYear))
{
int tmpDay = nDay;
int tmpMonth = nMonth;
int tmpYear = nYear;
timNgayHomSau(tmpDay, tmpMonth, tmpYear);
cout << "Ngay hom sau: " << tmpDay << " / " << tmpMonth << " / " << tmpYear;
}
else
{
cout << "Khong hop le." << endl;
}
//samon247
return 0;
}
