#include?<stdio.h>
#include?<time.h>
int?main(void)
{
int?year,month,day;
int?days=0,i,j,n,m,k,o;
int?m1[]={31,28,31,30,31,30,31,31,30,31,30,31};
int?m2[]={31,29,31,30,31,30,31,31,30,31,30,31};
time_t?today;
struct?tm?*p;
time(&today);
p=localtime(&today);
year=p->tm_year+1900;
month=p->tm_mon+1;
day=p->tm_mday;
printf("?%4d-%02d\n",year,month);
//if(year>=0)
for(i=0;i<year;i++)
{
if((i%4==0&&i%100!=0)||i%400==0)
days=days+366;
else?
days=days+365;
}
if((year%4==0&&year%100!=0)||year%400==0)
for(j=0;j<month-1;j++)
{
days=days+m2[j];
m=m2[month];
}
else?//if去掉
for(j=0;j<month-1;j++)
{
days=days+m1[j];
m=m1[month];
}
days=days+day-2;
n=days%7;
//無效，刪除 else?
//無效，刪除 printf("日期錯誤\n")；
if(day>1)
k=(7-(day-n+6)%7)%7;
else?if(day==1)
k=n;
printf("sun?mon?tue?wen?thu?fri?sat\n");
for(o=0;o<k;o++)
printf("?");
for(o=k;o<k+m;o++)
{
printf("%4d",o-k+1);
if(o%7==6)
printf("\n");
}
return?0;
}