题解 | 计算日期到天数转换

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
       int y = in.nextInt();
       int m= in.nextInt();
       int d = in.nextInt();
        int arr[] = {31,28,31,30,31,30,31,31,30,31,30,31};
        if(y%4==0&&y%100!=0){
            arr[1]=29;
        }
        if(y%400==0){
            arr[1]=29;
        }
        int count=d;
        for(int i=0;i<m-1;i++){
                count=count+arr[i];
        }
        System.out.println(count);
    }
}