程序代码：

 #include<stdio.h>
#include<stdlib.h>
int main()
{
int year,a,b,c,n,m,s,i=1;
char p = 0;
while(1)
{
if(i==1) printf("请输入年份!\n");
if(i>1)
{
printf("继续查询请按y,其他键退出!\n");
scanf("%c",&p);
if(p!='y') exit(0);
printf("请输入年份!\n"); //此数也可以加个system("cls");
}
scanf("%d",&year);
getchar();//接受回车
printf("\t\t\t%d年\n",year);
a=((year-1)+(year-1)/4-(year-1)/100+(year-1)/400+1)%7;
for(n=1;n<=12;n++)
{
printf("%d月\n\n",n);
printf("日\t一\t二\t三\t四\t五\t六\n");
if(n==1)
for(m=0;m<a;m++) printf("\t");
else
{
a=(a+s%7)%7;
for(m=0;m<a;m++)
printf("\t");
}
switch(n)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:s=31;break;
case 4:
case 6:
case 9:
case 11:s=30;break;
case 2:
if(((year%4==0)&&(year%100!=0))||(year%400==0)) s=29;
else s=28; break;
}
for(b=1;b<=s;b++)
{
printf("%d\t",b);
c=a+b;
if(c%7==0) printf("\n");
}
printf("\n\n");
}//for结束
i++;//改变i的值，使i满足i>1
}//while结束
system ("pause");
return 0;
}