万年历

来源：互联网发布：arta软件中文版编辑：程序博客网时间：2024/05/07 20:36
#include <iostream>#include <cstdio>using namespace std;int year,month;int m=1;int isleapyear(int year){    int isok=0;    return isok=year%4==0 || year%400==0 ? 1 : 0;}int yeardays(int year){    int days=0;    return days=isleapyear(year)?366:365;}int yearmonthdays(int year,int month){    int days=0;    switch(month)    {    case 1:    case 3:    case 5:    case 7:    case 8:    case 10:    case 12:        days=31;        break;    case 4:    case 6:    case 9:    case 11:        days=30;        break;    case 2:        days=(isleapyear(year)==1?29:28);        break;    }    return days;}int firstmonthweekday(int year,int month){    int days=0;    if(year>=2000)    {        for(int i=2000; i<year; i++)            days+=yeardays(i);        for(int i=1; i<month; i++)            days+=yearmonthdays(year,i);    }    if(year<2000)    {        for(int i=year+1; i<2000; i++)            days+=yeardays(i);        for(int i=month; i<=12; i++)            days+=yearmonthdays(year,i);    }    return days;}int yearmonthweekday(int year,int month){    int weekday=0;    if(year>=2000)    {        int n;        n=firstmonthweekday(year,month);        weekday=(n+6)%7;    }    else    {        int n;        n=firstmonthweekday(year,month);        weekday=6-n%7;    }    return weekday;};void displayyearmonth(int year,int month){    cout << "--------------" << year << "年" << month << "月" << "-----------------" << endl;    cout <<"日\t"<<"一\t"<<"二\t"<<"三\t"<<"四\t"<<"五\t"<<"六\t"<<"周\n";    int count=0;    for(int i=0; i<yearmonthweekday(year,month); i++)    {        cout << "\t";        count++;    }    for(int j=1; j<=yearmonthdays(year,month); j++)    {        cout << j << "\t";        count++;        if(count%7==0)        {            cout << m++ << "\t" << endl;        }    }    if(count%7!=0)    {        for(int i=0; i<7-count%7; i++)        cout << "\t";        cout << m++ << endl;    }}void displayyear(int year){    for(int i=1; i<=12; i++)    {        if(yearmonthweekday(year,i)!=0&&i!=1)        {            m--;        }        displayyearmonth(year,i);    }}int main(){    cin >> year;    displayyear(year);    return 0;}
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