各位大佬请问我这代码是哪里逻辑出错了，结果一直不正确！

Question

import java.util.Scanner;class TotalDays{ public static void main(String[] args) { Scanner s = new Scanner(System.in); System.out.print("请您输入一个年份："); int year = s.nextInt(); System.out.print("请您输入一个月份："); int month = s.nextInt(); System.out.println("您输入的日期共有" + totaldays(year,month) + "天"); } public static boolean runNian(int a)//判断闰年 { if (a % 400 == 0 || (a % 4 == 0 && a % 100 != 0)) { return true; } return false; } public static int nian(int a)//闰年一年天数 { if (runNian(a)) { return 366; } else return 365; } public static int monthDay(int a)//那一年某月的天数 { if (a == 1 || a == 3 || a == 5 || a == 7 || a == 8 || a == 10 || a == 12) { return 31; } else if (a == 4 || a == 6 || a == 9 || a == 11) { return 30; } else if (runNian(a)) { return 29; } else return 28; } public static int totaldays(int a , int b)//某年某月的天数 { int totalyear = 0; int totalmonth = 0; int totaldays = 0; for (int c = 1980; c < a ; c++ ) { totalyear = totalyear + nian(a); } for (int d = 1; d < b ; d++ ) { totalmonth = totalmonth + monthDay(b); } totaldays = totalyear + totalmonth; return totaldays; }}

Answer 1

monthDay(int a)方法里面在调用runNian()的时候传入的是a，a在这里应该是月份，而runNian()要求传入一个年份

Answer 2

感觉这个代码不够明确功能，你是要一年多少天呢，还是要什么呢？没看懂