Прошу помочь с С++!

#include <iostream>

using namespace std;

int main()

{
int a,b;
bool ap, bp;
cout<<"";
cin >> a;
cout<<"";
cin>> b;
switch(b)
{
case 1:
{
if (a>=1 && a<=31) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 2:
{
if (a>=1 and a<=29 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 3:
{
if (a>=1 and a<=31 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 4:
{
if (a>=1 and a<=30 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 5:

{
if (a>=1 and a<=31 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 6:
{
if (a>=1 and a<=30 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 7:
{
if (a>=1 and a<=31 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 8:
{
if (a>=1 and a<=31 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 9:
{
if (a>=1 and a<=30 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 10:
{
if (a>=1 and a<=31 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 11:
{
if (a>=1 and a<=30 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

case 12:
{
if (a>=1 and a<=31 ) ap = true, bp=true;
else ap = false, bp=false;
break;
}

}
if (ap && true)
{
cout<<"Все верно!";
}
else cout<<"Месяц введен не верно";

if (bp && true)
{
cout<<"Все верно!";
}
else cout<<"Дата введена не верно";

return 0;
}
Прошу подсобить и помочь подправить код, он должен соответсвовать требованиям в левой части

 #include  

 

using namespace std; 

 

int main() { 

    setlocale(LC_ALL, "rus"); 

    int date, month; 

    bool isDateOk = true, isMonthOk = true; 

    cin >> date >> month; 

    if (date < 1 || date > 31) isDateOk = false; 

    if (month < 1 || month > 12) isMonthOk = false; 

    else if (month == 2 && (date < 1 || date > 28)) isDateOk = false; 

    else if (month < 8 && (month & 1) && (date < 1 || date > 31)) isDateOk = false; 

    else if (month < 8 && !(month & 1) && (date < 1 || date > 30)) isDateOk = false; 

    else if ((month & 1) && (date < 1 || date > 30)) isDateOk = false; 

    else if (!(month & 1) && (date < 1 || date > 31)) isDateOk = false; 

    if(isDateOk && isMonthOk) cout

 #include  

using namespace std; 

int main() { 

    int months[]{ 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; 

    int day, month; 

    cin >> day >> month; 

    auto m_month = month > 0 ? month < size(months) : false; 

    auto m_day = day > 0; 

    if (m_day) { 

        m_day = m_month ? day

 #include  

#include  

 

const std::array dayCount = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30 ,31 }; 

 

int main() { 

	int month, day; 

	bool isDayOk, isMonthOk; 

 

	std::cin >> day; 

	std::cin >> month; 

 

	isMonthOk = (month > 0) && (month  0) && (day