万年历

#include <stdio.h>int year (int y){if ((y%4==0) && (y%100!=0) || y%400==0)return 366;else return 365;}int main (){int y,i,j,begin,sum=0;int week;int days[12]={31,28,31,30,31,30,31,31,30,31,30,31};printf ("==========万年历===========\n\n\n");printf ("请输入年份：");scanf ("%d",&y);for (i=1;i<y;i++)sum+=year(i);week=(sum+1)%7;if (year(y)==366)days[1]=29;printf ("\n%d年的日历为：\n\n\n",y);for (i=0;i<12;i++){      printf ("        %d月     \n\n",i+1);  printf (" 日 一 二 三 四 五 六\n");    for (j=0;j<week;j++)printf ("   ");for (begin=1;begin<=days[i];begin++){printf("%3d",begin);week=(week+1)%7;if (week%7==0)printf ("\n");}  printf ("\n========================\n\n");}         return 0;}