机考code16-日期

#include
using namespace std;

struct code
{
    int year, month, day;
}p;
int f[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
int main()
{
    while (scanf("%d%d%d", &p.year, &p.month, &p.day) != EOF)
    {
        //判断是否闰年
        if((p.year%400 == 0) || ((p.year % 4 == 0)&&(p.year%100==0)))
        {
            f[2] = 29;
        }
        else f[2] = 28;
        int flag = 0;
        //判断月份是否合法
        if (p.month < 1 || p.month > 12)
        {
            flag = 1;
        }
        //判断天数是否合法
        if(p.day <0 || p.day > f[p.month])
        {
            flag = 1;
        }
        if (flag)
        {
            printf("Input error!");
            continue;
        }
        int ans = p.day;
        for(int i = 1; i < p.month; i++)
        {
            ans += f[i];
        }
        printf("%d", ans);
    }
    return 0;
}