C++实现万年历源代码分享！

本文实例为大家分享了C++实现万年历的具体代码，供大家参考，具体内容如下

  #include<iostream>  #include<string>  #include<fstream>  #include<iomanip>  using namespace std;  #include<time.h>  ofstream fout("日历.txt");    void Printtitle(int n);  int OrEndl(int n);  string Choose();    //选择功能  int Calculate(int mon,int day);  void Printday(int a);  void FirstDay(int wday);  void SomeYear(int p);  void ThisMonth();     //打印当月日历的主函数  void PrintFirstNum(int mon);  void Printyear(int year);  void ThisYear(int p);   //打印当年日历的主函数  void Month(int n);  void Printnum(int q,int mon);  int Firstwday[12];     //储存每个月1号的星期数   struct tm *local;  string ch;   int a[12]={31,28,31,30,31,30,31,31,30,31,30,31}; //储存每月的天数  int main(void)  {     long t;    time(&t);    local=localtime(&t);    local->tm_year=local->tm_year+1900;    local->tm_mon++;    cout<<"今天是："<<local->tm_year<<"年"<<local->tm_mon      <<"月"<<local->tm_mday<<"日，";    fout<<"今天是："<<local->tm_year<<"年"<<local->tm_mon      <<"月"<<local->tm_mday<<"日，";    Month(local->tm_wday);     cout<<endl;    fout<<endl;    cout<<"当前时间是："<<local->tm_hour<<"时"<<local->tm_min<<"分"<<local->tm_sec      <<"秒"<<local->tm_wday<<endl;    fout<<"当前时间是："<<local->tm_hour<<"时"<<local->tm_min<<"分"<<local->tm_sec      <<"秒"<<local->tm_wday<<endl;    string flag;   int sum;   if(((local->tm_year%4==0)&&(local->tm_year%100!=0))||(local->tm_year%400==0))   a[1]=29;   sum=Calculate(local->tm_mon,local->tm_mday);   int p=sum-(local->tm_wday+1)-(sum/7)*7;    do{       flag=Choose();       if(flag=="1")    //根据选择的数字确定调用哪个函数        ThisMonth();       else if(flag=="2")        ThisYear(p);       else if(flag=="3")        SomeYear(p);       else if(flag=="4")        break;    else    {    cout<<"输入错误"<<endl;      fout<<"输入错误"<<endl;    continue;    }   }while(1);    return 0;  }    string Choose()      {     cout<<"请选择"<<"1、当月日历"<<endl<<"   2、当年日历"<<endl   <<"   3、万年历"<<endl<<"   4、退出"<<endl;   fout<<"请选择"<<"1、当月日历"<<endl<<"   2、当年日历"<<endl   <<"   3、万年历"<<endl<<"   4、退出"<<endl;   cin>>ch;   fout<<ch;   cout<<endl;   fout<<endl;   return ch;   }    void ThisMonth()    {     int m=local->tm_mon%12;   Printtitle(m);   int p=local->tm_mday-(local->tm_wday+1)-(local->tm_mday/7)*7;   Printnum(p,local->tm_mon);  }    void ThisYear(int p)    {     FirstDay(p);   Printyear(local->tm_year);   for(int a=1;a<12;a=a+2)   {     Printtitle(a);   PrintFirstNum(a);   }  }    void SomeYear(int p)  //打印万年历的主函数  {     int m;   cout<<"Please enter a year number"<<endl;   fout<<"Please enter a year number"<<endl;   while(1)     {         scanf("%d",&m);      if(  m<0  )    {      printf("nInput error,Please enter a year number again:n");      fflush(stdin);    //没加这句话会死循环，加了就ok      }      else  break;     }   fout<<m;   cout<<endl;    fout<<endl;   Printyear(m);    int n=m;    if(n<local->tm_year)   //计算所输年份的1月1日星期几    {      for(;n<local->tm_year;n++)    {        if(((n%4==0)&&(n%100!=0))||(n%400==0))     p=p+2;      else     p++;    if(p>=7)     p=p-7;    }   }    else    {    for(;n>local->tm_year;n--)    {     if(((n%4==0)&&(n%100!=0))||(n%400==0))     p=p-2;     else     p--;    if(p<0)     p=p+7;    }    }  FirstDay(p);   for(int h=1;h<12;h=h+2)   {   Printtitle(h);    if(((m%4==0)&&(m%100!=0))||(m%400==0))    a[1]=29;    else    a[1]=28;   PrintFirstNum(h);   }  }    void Printtitle(int n)  //打印标题  {   do{     cout<<"     ";     fout<<"     ";   char str[12][10]={"January","February","March","April","May","June","July","August","September","October","November","December"};   for(int h=0;h<10;h++)   {   cout<<str[n-1][h];   fout<<str[n-1][h];   }   cout<<"     ";     fout<<"     ";   if(OrEndl(n))   break;  n++;   }while(!(n%2));   do{    cout<<"____________________________";     fout<<"____________________________";  if(OrEndl(n))   break;  n++;  }while(!(n%2));    do{  cout<<" Sun Mon Tue Wed Thu Fri Sat ";  fout<<" Sun Mon Tue Wed Thu Fri Sat ";  if(OrEndl(n))   break;  n++;   }while(!(n%2));  }      int Calculate(int mon,int day)  //计算当天到当年1月1日的天数  {    int sum=day;  for(mon--;mon!=0;mon--)   sum=sum+a[mon-1];   return sum;  }  void FirstDay(int wday)   //推算每个月1号的星期数  {   if(wday<=0)   wday=wday+7;   Firstwday[0]=7-wday;   for(int n=0;n<11;n++)   {   Firstwday[n+1]= Firstwday[n]+a[n]%7;   if(Firstwday[n+1]>6)        Firstwday[n+1]=Firstwday[n+1]-7;   }  }    int OrEndl(int n)  {     if(ch=="1")    //如果是打出当月日历就直接跳出循环  {     cout<<endl;   fout<<endl;   return 1;  }   if(n%2)        //判断单月输空格，双月回车   {    cout<<"    ";   fout<<"    ";   }  else   {     cout<<endl;   fout<<endl;  }  return 0;  }    void Printyear(int year) //打印年份  {     int m=year/1000;   int n=(year/100)%10;   int p=(year/10)%10;   int q=year%10;   int num[4]={m,n,p,q};   char str[5][10][7]={"***** ","  * ","***** ","***** ","*  * ","***** ","***** ","***** ","***** ","***** ",           "*  * ","  * ","  * ","  * ","*  * ","*   ","*   ","  * ","*  * ","*  * ",              "*  * ","  * ","***** ","***** ","***** ","***** ","***** ","  * ","***** ","***** ",              "*  * ","  * ","*   ","  * ","  * ","  * ","*  * ","  * ","*  * ","  * ",              "***** ","  * ","***** ","***** ","  * ","***** ","***** ","  * ","***** ","***** ",};   for(int g=0;g<5;g++)   {     cout<<"          ";   fout<<"          ";   for(int i=0;i<4;i++)     for(int h=0;h<7;h++)   {      cout<<str[g][num[i]][h];    fout<<str[g][num[i]][h];   }    cout<<endl;    fout<<endl;   }  }    void PrintFirstNum(int mon)  //打印每两个月的日历  {   int mday[2];       //储存每两个月当前打印的日期   do{   int k=0;     for(;k<Firstwday[mon-1];k++)   {   cout<<"  ";    fout<<"  ";   }     k++;   for(int d=1;k<8;d++,k++)      //输入每个月的第一行   {   cout<<" "<<d<<" ";   fout<<" "<<d<<" ";   }   if(mon%2)             //判断单月输空格，双月回车   {    cout<<"    ";    fout<<"    ";    mday[mon%2-1]=d;   }   else    {    cout<<endl;      fout<<endl;      mday[mon%2+1]=d-1;   }   mon++;   }while(!(mon%2));   mon=mon-2;    int i=0,k=1,m=mon-1;    for(;mday[i]<a[m]+1;mday[i]++,k++)         {    if(mday[i]<10)   {     cout<<" "<<mday[i]<<" ";   fout<<" "<<mday[i]<<" ";    }    else   {   cout<<" "<<mday[i]<<" ";   fout<<" "<<mday[i]<<" ";   }    if(k==7)    {   if(!i)     {    cout<<"    ";    fout<<"    ";     i=1;     m++;   }     else     {    cout<<endl;    fout<<endl;     i=0;     m--;   }     k=0;   }    }    m=mon-1;    if(mday[0]==a[m]+1&&mday[1]<a[m+1]+1)    //当双月未结束，单月输入结束跳出时最后一行的输出情况    {    for(;k<8;k++)    {      cout<<"  ";    fout<<"  ";    }    cout<<"    ";   fout<<"    ";     k=1;    for(mday[1]++;mday[1]<a[m+1]+1;mday[1]++,k++)      {   cout<<" "<<mday[1]<<" ";    fout<<" "<<mday[1]<<" ";     if(k==7)    {    cout<<endl;     fout<<endl;      cout<<"                  ";     fout<<"                  ";    }     }     cout<<endl;   fout<<endl;    }    if(mday[0]<a[m]+1&&mday[1]==a[m+1]+1)  //当单月未结束，双月输入结束跳出时最后一行的输出情况    {    cout<<endl;   fout<<endl;     k=1;    for(mday[0]++;mday[0]<a[m]+1;mday[0]++,k++)   {    cout<<" "<<mday[0]<<" ";    fout<<" "<<mday[0]<<" ";     if(k==7)    {    cout<<endl;     fout<<endl;      cout<<"                  ";     fout<<"                  ";    }     }     cout<<endl;   fout<<endl;    }  }    void Month(int n)   {   char str[7][7]={"星期天","星期一","星期二","星期三","星期四","星期五","星期六"};   for(int h=0;h<7;h++)   {   cout<<str[n][h];   fout<<str[n][h];   }  }    void Printnum(int q,int mon)  //打印当月日历  {     if(q<0)      q=q+7;  int k=0;   if(q!=7&&q)   {   for(;k<7-q;k++)   {    cout<<"  ";   fout<<"  ";   }   }    k++;    for(int d=1;d<a[mon-1]+1;d++,k++)   {   cout<<setw(4)<<d;     if(k==7)   {    cout<<endl;    fout<<endl;    k=0;   }   }    cout<<endl;    fout<<endl;  }

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