循环小程序：万年历

#include <stdio.h>
main()
{
  int yea,k,i,j;
  printf("您想要哪一年的日历：");
  scanf("%d",&yea);
  printf("\n\n");
  printf("%d年的日历为：\n",yea);
  k=(yea+(yea-1)/4-(yea-1)/100+(yea-1)/400)%7;
  int c[12]={31,28,31,30,31,30,31,31,30,31,30,31};
  int temp=0;
    if(yea%4==0&&yea%400==0||yea%100!=0)
    c[1]=29;
    else
    c[1]=28;
    for(i=0;i<12;i++)
   {
    printf("%d MONTH\n",i+1);
    printf(" Sun Mon Tue Wed Thu Fri Sat\n");

    for(j=1;j<=k;j++)
    {
    temp++;
     printf("    ");
    }
    for(j=1;j<=c[i];j++)
    {
        temp++;
       printf("%4d",j);
       if(temp%7==0)
       printf("\n");
    }
    printf("\n");
    k=(k+j-1)%7;
   }
}