cp_cv_ws/cpp_pkgs/src/hw.cpp

/*
 * @Description: cpp format/regex test 
 * @Author: yct
 * @Date: 2020-03-30 11:23:51
 * @LastEditTime: 2020-03-30 12:20:33
 * @LastEditors: yct
 */
#define __STDC_WANT_LIB_EXT1__ 1
#include <iostream>
#include <ctime>
#include <string>
#include <regex>
using namespace std;

class Date
{
private:
    string time1;

public:
    void show1() { cout << "一年中的第"; }
    Date(string a) { time1 = a; }
    Date() { time1 = ""; }
    void Show() { cout << time1 << endl; }
    void Shownow();
};

void Input();

int main(void)
{
    Input();
}

void Date::Shownow()
{
    std::time_t now = std::time(nullptr);
    char dt[26] = {0};
    sprintf(dt, "%s", ctime(&now));
    Date a(dt);
    cout << "当前时间: ";
    a.Show();
}

void Input()
{
    cout << "按如下格式输入日期: DDD/YYYY(一年中第几天), MM/DD/YY, June/DD/YYYY"<<endl;
    regex reg1("(\\d{3})(.)(\\d{4,5})");
    regex reg2("(\\d{2}(.)\\d{2}(.)(\\d{2}))");
    regex reg3("([A-Za-z]{3,9})(.)(\\d{2})(.)(\\d{4,5})");
    string k;
    int i = 0, k1 = 0, k2 = 0;
    int p1, p2 = 0, p3 = 0;
    while (i != 1)
    {
        cin >> k;
        if (regex_search(k, reg1))
        {
            string o1 = k.substr(0, 3);
            string o2 = k.substr(4, 4);
            p1 = stoi(o1);
            p2 = stoi(o2);
            cout << p1 << " " << p2;
            break;
        }
        if (regex_search(k, reg2))
        {
            string o1 = k.substr(0, 2);
            string o2 = k.substr(3, 2);
            string o3 = k.substr(6, 4);
            p1 = stoi(o1);
            p2 = stoi(o2);
            p3 = stoi(o3);
            cout << p1 << " " << p2 << " " << p3;
            break;
        }
        if (regex_search(k, reg3))
        { 
            string o1 = k.substr(0, k.length()-8);
            string o2 = k.substr(k.length()-7, 2);
            string o3 = k.substr(k.length()-4, 4);
            p2 = stoi(o2);
            p3 = stoi(o3);
            cout << o1 << " " << p2 << " " << p3;
            break;
        }
        cout<<"请重新输入"<<endl;
    }
}