DayOfWeek

题目

2008年上海交大计算机上机题

代码

#include<iostream>
#include<algorithm>
#include<cstring>
using namespace std;

int ISYEAP(int x){
    if((x%100!=0 && x%4 == 0) ||(x % 400 == 0) ) return 1;
    else return 0;
}

int dayOfMonth[13][2] = {
    0,0,
    31,31,
    28,29,
    31,31,
    30,30,
    31,31,
    30,30,
    31,31,
    31,31,
    30,30,
    31,31,
    30,30,
    31,31
};

typedef struct Date{
    int Day;
    int Month;
    int Year;
    void nextDay(){
        Day++;
        if(Day > dayOfMonth[Month][ISYEAP(Year)]){
            Day = 1;
            Month++;
            if(Month > 12){
                Month = 1;
                Year++;
            }
        }
    }
}Date;

char monthName[13][10] = {
    "",
    "January",
    "February",
    "March",
    "April",
    "May",
    "June",
    "July",
    "August",
    "September",
    "October",
    "November",
    "December"
};
char dayName[7][10] = {
    "Sunday",
    "Monday",
    "Tuesday",
    "Wednesday",
    "Thursday",
    "Friday",
    "Saturday"
};
int buf[3001][13][32];

int main(){
    Date tmp;
    tmp.Year = 0;
    tmp.Month = 1;
    tmp.Day = 1;
    int cnt = 0;
    while(tmp.Year != 3001){
        buf[tmp.Year][tmp.Month][tmp.Day] = cnt;
        tmp.nextDay();
        cnt++;
    }
    int d,m,y;
    char str[10];
    while(scanf("%d%s%d",&d,&str,&y) != EOF){
        for(int i = 1;i <= 12;i++){
            if(strcmp(str,monthName[i]) == 0){
                m = i;
                break;
            }
        }
        int days = (abs (buf[y][m][d] - buf[2021][3][2]) );
        days = (days + 2 ) % 7;
        printf("%s
",dayName[days ]);
    }
    return 0;
}