p2.cpp

好东西,绝对是好东西,我向大家推荐

#include <iostream.h>
int main()
{
	int y,m,n;
	while(cin>>y>>m)
	{
		if((y%4==0&&y%100!=0)||(y%400==0)) {n=29;}
			else {n=28;}
		switch(m)
		{
			case 1: cout<<"31"<<endl;break;
			case 2: cout<<n<<endl;break;
			case 3: cout<<"31"<<endl;break;
			case 4: cout<<"30"<<endl;break;
			case 5: cout<<"31"<<endl;break;
			case 6: cout<<"30"<<endl;break;
			case 7: cout<<"31"<<endl;break;
			case 8: cout<<"31"<<endl;break;
			case 9: cout<<"30"<<endl;break;
			case 10: cout<<"31"<<endl;break;
			case 11: cout<<"30"<<endl;break;
			case 12: cout<<"31"<<endl;break;
		}
	}
}