输入输出样例：
Input Sample 1: 2009-2 Output Sample 1: 28 Input Sample 2: 2009-3 Output Sample 2: 31 Input Sample 3: 2009-11 Output Sample 3: 30 Input Sample 4: 2008-2 Output Sample 4: 29

#include <stdio.h>
int main()
{
int year,month,day;
printf("Input:");
scanf("%d-%d",&year,&month);
if (month==2)
{
if((year%4==0&&year%100>0) || year&400==0)
day=29;
else day=28;
}
if(month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12)
day=31;
if (month==4||month==6||month==9||month==11)
day=30;
printf("%d", day );
return 0;
}

输入那几个数据时，得出的结果和要求一样啊，为什么说我的是错误答案……

忘的好干净。。。

LZ知道了…