poj2080 日历

来源：互联网发布：淘宝怎么引流量编辑：程序博客网时间：2024/05/20 07:38
#include<iostream>#include<fstream>using namespace std;const char wstr[][20]={"Saturday","Sunday","Monday","Tuesday","Wednesday","Thursday","Friday"};int days_of_year(int year){    if(year%100==0)      return year%400==0? 366 : 365;    return year%4==0? 366 : 365;}int days_of_month(int month,int year){    if(month==2)      return days_of_year(year)==366 ? 29 : 28;    int d;    switch(month)    {        case 1: case 3: case 5: case 7:case 8:        case 10: case 12:          d=31;break;        default:          d=30;    }    return d;}int main(){    //ifstream cin("1.txt");    int n;    cin>>n;    while(n>=0)    {        int year,month,day,weak;        weak=n%7;        year=2000;        month=1;        day=1;        while(n)        {            if(n>=days_of_year(year))            {                n-=days_of_year(year);                ++year;            }            else if(n>=days_of_month(month,year))            {                n-=days_of_month(month,year);                ++month;            }            else{               day+=n;               n=0;            }        }        cout<<year<<'-'<<(month<10 ? "0":"")<<month<<'-'<<(day<10?"0":"")<<day<<' '<<wstr[weak]<<endl;        cin>>n;    }    return 0;}
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