C++ 代码

#include<iostream>
#include<string>
#include<algorithm>
using namespace std;
int months[] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
int zj = 6;//周几
int sum = 0;

string str;
int main()
{
    int year = 2000;
    int month = 1;
    int day = 1;
    for (int y = 2000; y <= 2020; y++){
        if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0)
            months[2] = 29;
        else months[2] = 28;
        for (int m = 1; m <= 12; m++){
            for (int d = 1; d <= months[m]; d++){
                if (y == 2020 && m == 10 && d == 2) {
                    cout << sum << endl;

                }

                if (zj > 7) 
                    zj %= 7;
                if (zj == 1 || d == 1) 
                    sum += 2;
                else 
                    sum += 1;
                zj++;
            }
        }
    }

    system("pause");
    return 0;
}