日历.txt

一个万年历

#include<stdio.h>
void main()
{   int leap(int year);
    void headstar(char *moon[],int n);
 void printstar( );
 void week(int *p1,int*p2,int n);
 long int pastday;
 int year,week_1,i,j,s,t,k,count=0,b[12];
 int a[12]={31,28,31,30,31,30,31,31,30,31,30,31};
 char
*moon[]={"Jan.","Feb.","Mar.","Api.","May","Jun.","Jul.","Aug.","Sep.","Oct.","Nov
.","Dec."};
 printf("Nice to meet you!\n");
 printf("Please input year:__\n");
 scanf("%d",&year);
 for(i=1;i<year;i++)
 { k=leap(i);
 if(k)count++;}
 pastday=(year-1)*365+count;
 printf("%d\n",count);
 week_1=(pastday+1)%7;
 t=leap(year);
 if(t) {printf("%d is",year);a[1]=29;}
 else printf("%d is not",year);
     printf(" a leap year.\n");
  b[0]=week_1;
  for(i=0,j=0;i<12;i++,j++)
  { s=a[i]%7;b[j+1]=b[j]+s;if(b[j+1]>=7)b[j+1]-=7;}
  for(i=0;i<=11;i++)
  { headstar(moon,i);week(a,b,i);}
  printf("Goodbye!!!");
}
    int leap(int year)
 { int leap;
 if(year%4==0)
 {  if(year%100==0)
 {if(year%400==0)leap=1;
 else leap=0;
 }
 else leap=1;
 }
 else leap=0;
 return(leap);}
    void headstar(char*moon[],int n)
 {   char **p;
    p=moon+n;
  printf("**%s**\n",*p);
 }
 void printstar()
 {printf("***************************************\n");}
 void week(int*p1,int*p2,int n)
 { int i,j,d[7],e[40];
  printstar();
 printf("  Sun  Mon  Tue  Wed  Thu  Fri  Sat\n");
 for(i=0;i<*(p2+n);i++)
 { d[i]=' ';printf("    %c",d[i]);}
 for(j=0;j<*(p1+n);j++)
 { e[j]=j+1;
 printf("  %3d",e[j]);
 if((i+j+1)%7==0)printf("\n");
 }
 printf("\n");
 printstar();
 }