万年历程序--C++编写

来源：互联网发布：python爬虫代码编辑：程序博客网时间：2024/06/05 03:14
题目直接贴截图：
这里写图片描述

代码很简单，加上注释应该都能看懂
#include<iostream>#include<fstream>#include<iomanip>using namespace std;int monthset[20]={0,31,28,31,30,31,30,31,31,30,31,30,31};class cal{    public:    void input();    void outyear();    void outmonth();    void outday();    bool isleap(int year);//判断是否是闰年    int getday(int year,int month,int day);//获取到目前为止的所有天数    void print(int year,int month);//输出某一年某一月的月历};void cal::input(){    int choice;    bool flag=true;    while(flag)    {        cout<<"请输入查询参数"<<endl;        cout<<"1:输入年"<<endl;        cout<<"2:输入年，月"<<endl;        cout<<"3:输入年，月，日"<<endl;        cout<<"0:退出"<<endl;        cin>>choice;        switch(choice)        {            case(1):outyear();            break;            case(2):outmonth();            break;            case(3):outday();            break;            case(0):flag=false;break;            default:cout<<"输入错误！请重新输入"<<endl;        }    }}void cal::outyear(){    int year;    int i;    cout<<"请输入年："<<endl;    cin>>year;    if(isleap(year))//如果是闰年的二月    {        monthset[2]=29;    }    else    {        monthset[2]=28;    }    cout<<"The calendar of the year "<<year<<endl<<endl;    for(i=1;i<=12;i++)    {        print(year,i);    }}void cal::outmonth(){    int year,month;    cout<<"请输入年："<<endl;    cin>>year;    if(isleap(year))//如果是闰年的二月    {        monthset[2]=29;    }    else    {        monthset[2]=28;    }    cout<<"请输入月："<<endl;    cin>>month;    print(year,month);}void cal::outday(){    int year,month,day;    int sumday,weekday;    cout<<"请输入年："<<endl;    cin>>year;    if(isleap(year))//如果是闰年的二月    {        monthset[2]=29;    }    else    {        monthset[2]=28;    }    cout<<"请输入月："<<endl;    cin>>month;    cout<<"请输入日："<<endl;    cin>>day;    cout<<year<<"年"<<month<<"月"<<"日 ";    sumday=getday(year,month,day);    weekday=sumday%7;    switch(weekday)    {        case(0):cout<<"星期日";        break;        case(1):cout<<"星期一";        break;        case(2):cout<<"星期二";        break;        case(3):cout<<"星期三";        break;        case(4):cout<<"星期四";        break;        case(5):cout<<"星期五";        break;        case(6):cout<<"星期六";        break;    }    cout<<endl;}bool cal::isleap(int year){    if(year%4==0 && year%100!=0 ||(year%400==0))        return true;    else return false;}int cal::getday(int year,int month,int day){    int i;    int x=0;    int yearday=0;    int monthday=0;    int sumday=0; //从公元1年1月1日到当前日期的所有天数    for(i=1;i<year;i++)    {        if(isleap(i))//如果有闰年，则该年的天数加一            x++;    }    yearday=x+(year-1)*365;    for(i=1;i<month;i++)    {      monthday+=monthset[i];    }    sumday=yearday+monthday+day;    return sumday;}void cal::print(int year,int month){    int sumday=getday(year,month,1);    int i;    int weekday=sumday%7;//得到该月一号的星期值    switch(month)    {        case (1):cout<<"Januray 1"<<endl;break;        case (2):cout<<"February 2"<<endl;break;        case (3):cout<<"Match 3"<<endl;break;        case (4):cout<<"April 4"<<endl;break;        case (5):cout<<"May 5"<<endl;break;        case (6):cout<<"Juno 6"<<endl;break;        case (7):cout<<"July 7"<<endl;break;        case (8):cout<<"August 8"<<endl;break;        case (9):cout<<"September 9"<<endl;break;        case (10):cout<<"October 10"<<endl;break;        case (11):cout<<"November 11"<<endl;break;        case (12):cout<<"December 12"<<endl;break;    }    cout<<"========================================"<<endl;    cout<<"Sun   Mon   Tue   Wed   Thu   Fri   Sat"<<endl<<endl;    switch(weekday)    {        case(0):cout<<" "<<setw(6)<<setiosflags(ios::left)<<"1";        break;        case(1):cout<<"       "<<setw(6)<<setiosflags(ios::left)<<"1";        break;        case(2):cout<<"             "<<setw(6)<<setiosflags(ios::left)<<"1";        break;        case(3):cout<<"                   "<<setw(6)<<setiosflags(ios::left)<<"1";        break;        case(4):cout<<"                         "<<setw(6)<<setiosflags(ios::left)<<"1";        break;        case(5):cout<<"                               "<<setw(6)<<setiosflags(ios::left)<<"1";        break;        case(6):cout<<"                                     "<<setw(6)<<setiosflags(ios::left)<<"1"<<endl;        break;    }    for(i=2;i<=monthset[month];i++)    {        weekday=(weekday++)%7;        if(weekday==6)        {            //cout<<endl;            cout<<setw(6)<<setiosflags(ios::left)<<i;            cout<<endl;        }        else            cout<<setw(6)<<setiosflags(ios::left)<<i;    }    cout<<endl<<endl;}int main(){    cal c1;    c1.input();    return 0;}
不过最好是建一个project,将类放在一个头文件中，main()函数放在source文件中。
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