[萬年曆活動] cylinder 大一的老作品

[cylinder (Singular Points)]

//  我是以1995年一月一日為基準點
//　
//  計算出輸入者所輸入月份的第一天和1995.01.01.差多少天
//
//　大致上是這樣子吧
//
#include <iostream.h>
#include <iomanip.h>
#include <conio.h>
#include <stdio.h>

int detect (int);
void display (int,int,int,int);
void locate (int,int,int);

int main()
{
 int year,month;
 int i,mday,mfweek,mdelta,le1;
 char flag;
 long delta;
 int m[12];

 m[0]=31; m[2]=31; m[3]=30; m[4]=31; m[5]=30; m[6]=31;
 m[7]=31; m[8]=30; m[9]=31; m[10]=30; m[11]=31;
 m[1]=0;

 while (1)
 {
  mdelta=0; delta=0; i=0; mday=0; mfweek=0; flag='\0';
  le1=1;
  clrscr();
  gotoxy (1,25);
  cout <<"Please input the year:";
  cin >>year;
  while (le1)
    {
     clrscr();
     flag='\0';
     gotoxy (1,25);
     cout <<"Please input the month:";
     cin >>month;
     if (year>1995)
        {
         for (i=1995;i<year;i++)
             { if (detect(i)) delta=delta+366;
               else delta=delta+365;           }
        }
     if (year<1995)
        {
         for (i=year;i<1995;i++)
             { if (detect(i)) delta=delta+366;
               else delta=delta+365;           }
         delta=-delta;
        }
     m[1]=detect(year)+28;
     for (i=0;i<(month-1);i++)
         { mdelta=mdelta+m[i]; }
     delta=delta+mdelta;
     mfweek=((delta%7)+7)%7;
     mday=m[month-1];
     display (year,month,mday,mfweek);
     gotoxy (1,25);
     cout <<"1) Input the year/month. 2) Quit. :";
     cin >>flag;
     if (flag=='1') le1=0;
     if (flag=='2') return 0;
  }
 }
}

int detect (int year)
{
 int r;
 if (year%4==0)
    {
     if (year%100==0)
        {
         if (year%400==0) r=1;
         else r=0;
        }
     else r=1;
    }
 else r=0;
 return r;
}

void display (int year,int month,int mday,int mfweek)
{
 clrscr();
 int d,w,n;
 d=mfweek;
 w=1;
 n=1;
 gotoxy (25,1);
 cout <<year<<"           "<<month<<endl;
 cout <<"      *********************************************";
 gotoxy (7,5);
 cout <<"Sun    Mon    Tue    Wed    Thu    Fri    Sat";
 while (n<=mday)
   {
    d++;
    if (d==8)  { d=1; w++; }
    locate (d,w,n);
    n++;
   }
}

void locate(int d,int w,int n)
{
 int x,y;
 x=d*7;
 y=w*3+4;
 if (n<10) x++;
 gotoxy (x,y);
 cout <<n<<endl;
}



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