题解 | #计算日期到天数转换#

#include<stdio.h>
int main()
{
    int y, m, d;
    scanf("%d %d %d", &y, &m, &d);
    int days = 0;
    int arr[12] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30};
    for(int i=0; i<m; i++)
    {
        if(y % 400 == 0 || (y % 4 == 0 && y % 100 != 0))
        {
            arr[2] = 29;
        }
        days += arr[i];
    }
    printf("%d", days+d);
}