闰年判断与日期计算

 1 /*闰年判断与日期计算*/
 2 #include<iostream>
 3 #include<string>
 4 #include<iomanip>
 5 using namespace std;
 6 struct {
 7     int date[12] = { 31,29,31,30,31,30,31,31,30,31,30,31 };
 8 }run;//闰年
 9 struct {
10     int date[12] = { 31,28,31,30,31,30,31,31,30,31,30,31 };
11 }nrun;//非闰年
12 
13 int main() {
14     int ye, mo, day;
15     cin >> ye >> mo >> day;
16     int sum = 0;
17     if (ye % 4 == 0 && ye % 100 != 0 || ye % 400==0) {//闰年
18         for (int i = 0; i < mo-1; i++) {//计算到前一个月
19             sum += run.date[i];
20         }
21     }
22     else {
23         for (int i = 0; i < mo-1; i++) {
24             sum += nrun.date[i];
25         }
26     }
27     sum += day;//加上日
28     cout << ye << "年" << mo << "月" << day << "日 是一年中的第" << sum << "天" << endl;
29     system("pause");
30     return 0;
31 }