C#——输入某日期，判断该日期对应星期几

来源：互联网发布：plsql怎么导出表数据编辑：程序博客网时间：2024/05/17 22:01

一个简单的程序，自己写着玩玩，O(∩_∩)O哈哈哈~ 没有用C#系统提供的DataTime之类的，使用了就方便多了。。。

代码如下所示：

using UnityEngine;using System.Collections;using System;/// <summary>/// 已知1900年一月一日星期一/// </summary>public class WeekTest : MonoBehaviour{    public int Year;    public int Mouth;    public int Day;    void Update()    {        if (Input.GetMouseButtonDown(0))        {            int AllDays = coutDays(Year, Mouth, Day);            int t = ((AllDays % 7)) % 7;            Debug.Log(Year + "/" + Mouth + "/" + Day + "   星期" + t);        }    }    /// <summary>    /// 查看是否是闰年    /// </summary>    bool isRunNian(int _year)    {        if ((_year % 4 == 0 && _year % 100 != 0) || _year % 400 == 0)        {            return true;        }        return false;    }    /// <summary>    /// 一年中某一个月多少天    /// </summary>    int MouthDays(int _year,int _mouth)    {        switch (_mouth)        {            case 1:            case 3:            case 5:            case 7:            case 8:            case 10:            case 12:                return 31;            case 4:            case 6:            case 9:            case 11:                return 30;            case 2:                if (isRunNian(_year))                    return 29;                else                    return 28;        }        return 0;    }    /// <summary>    /// 从某年到某年共多少天    /// </summary>    int daysYear(int yearOne, int yearTwo)    {        int dayCout = 0;        for (int i = yearOne; i< yearTwo; i++)        {            if (isRunNian(i))            {                dayCout += 366;            }            else            {                dayCout += 365;            }        }        return dayCout;    }    /// <summary>    /// 从某年一月到某月多少天    /// </summary>    int daysMouth(int _year, int _mouth)    {        int day = 0;        for (int i = 1; i < _mouth; i++)        {            day += MouthDays(_year, i);        }        return day;    }    /// <summary>    /// 从1900年到某日期共多少天    /// </summary>    int coutDays(int _year,int _Mouth,int _day)    {        int days = 0;        days = daysYear(1900, _year) + daysMouth(_year, _Mouth) + _day;        return days;    }}

测试如下所示：

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