calender1.cpp

显示日历的程序

// calender.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"


int main(int argc, char* argv[])
{
	return 0;
}



void print(int n)
{int i;
for(i=0;i<n;i++) printf(" ");
}
int day(int year)
{long a,b;
if(year<=2000)
{a=2000-year;b=6-(a+a/4-a/100+a/400)%7; return b;
}
else {a=year-2000; b=(a+1+(a-1)/4-(a-1)/100+(a-1)/400)%7+6; return b%7;
      }
}
#define X " Sun Mon Tue Wed Thu Fri Sat"
#define P printf
#define B break
#define FP fprintf
#include <stdio.h>
void main()
{int i,j,k,m,n,f1,f2,year,d;
int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
char fname[12];  FILE *fw;
clrscr();
P(" Input the year:"); scanf("%d",&year);上
P(" Input the file name:"); scanf("%s",fname); P("\n");
fw=fopen(fname,"w+");
if(fw==NULL) {P(" can not open file."); return;}
P(" The calendar of the year %d.\n",year);
FP(fw," The calendar of the year %d.\n",year);
d=day(year);
if(year%4==0&&year%100||year%400==0) a[2]++;
for(i=1;i<=12;i+=2)
{m=0; n=0; f1=0; f2=0;
  switch(i)
  {case 1:P(" Januray 1   "); FP(fw," Januray 1   "); B;
   case 3:P(" March 3     "); FP(fw," March 3     "); B;
   case 5:P(" May 5       "); FP(fw," May 5       "); B;
   case 7:P(" July 7     ");  FP(fw," July 7      "); B;
   case 9:P(" September 9 "); FP(fw," September 9 "); B;
   case 11:P(" Nevember 11 "); FP(fw," Nevember 11 "); B;
  }
  print(21); for(k=0;k<21;k++) fprintf(fw," ");
  switch(i+1)
  {case 2:P(" February 2  "); FP(fw," February 2  ");B;
   case 4:P(" April 4    "); FP(fw," April 4     ");B;
   case 6:P(" June 6      "); FP(fw," June 6       ");B;
   case 8:P(" August 8   "); FP(fw," August 8   "); B;
   case 10:P(" October 10  "); FP(fw," October 10  ");B;
   case 12:P(" December 12"); FP(fw," December 12");B;
  }
  P("\n");   fprintf(fw,"\n");
  P(X); fprintf(fw,X); print(6);
  fprintf(fw,"      "); P(X); fprintf(fw,X);
  fprintf(fw,"\n"); P("\n");
  for(j=0;j<6;j++)
  {if(j==0){print(d*4); for(k=0;k<d*4;k++) fprintf(fw," ");
        for(k=0;k<7-d;k++) {P("%4d",++m); fprintf(fw,"%4d",m);}
        print(6); fprintf(fw,"      ");
        d+=a[i]%7; d%=7;
        print(d*4); for(k=0;k<d*4;k++) fprintf(fw," ");
        for(k=0;k<7-d;k++) {P("%4d",++n); fprintf(fw,"%4d",n);}
        P("\n"); fprintf(fw,"\n");
       }
   else{for(k=0;k<7;k++)
       {if(m<a[i]) {P("%4d",++m); fprintf(fw,"%4d",m);}
    else {print(4);   fprintf(fw,"    ");}
    if(m==a[i]) f1=1;
       }
       print(6); fprintf(fw,"      ");
       for(k=0;k<7;k++)
       {if(n<a[i+1]) {P("%4d",++n);fprintf(fw,"%4d",n);}
    else {print(4);  fprintf(fw,"    ");}
    if(n==a[i+1]) f2=1;
       }
       P("\n"); fprintf(fw,"\n");
       if(f1&&f2) B;
   }
  }
  d+=a[i+1]%7; d%=7; P(" ");  fprintf(fw," ");
  for(k=0;k<27;k++) {P("="); fprintf(fw,"=");}
  print(6);fprintf(fw,"      ");    P(" ");  fprintf(fw," ");
  for(k=0;k<27;k++) {P("=");fprintf(fw,"=");}
  P("\n"); fprintf(fw,"\n");
  if(i==5) {getch();clrscr();}
}
getch();
}.