diff --git a/seatung.h b/seatung.h
new file mode 100644
index 0000000..44550e4
--- /dev/null
+++ b/seatung.h
@@ -0,0 +1,230 @@
+#include "wudi.h"
+void printBlank(int n); 
+void printYearCalendar();
+void createMonthCalendar(int year,int month);
+void printMonthCalendar();
+int getWeekDay(int year,int month,int day);
+int getDays(int year,int month);
+int menu();
+void third();
+int getDays(int year,int month)// 得到该月有多少天 
+{
+	switch(month)
+	{
+		case 1:case 3:case 5:case 7:case 8:case 10:case 12:// 这些月份有31日 
+			return 31;
+			break;
+		case 4:case 6:case 9:case 11:// 这些月份有30日 
+			return 30;
+			break;
+		case 2:
+			return isLeapYear(year)?29:28;// 如果该年为闰年，2月有29日，否则2月只有28日 
+		default:
+			return 0;// 如果月份输入有误，返回0 
+	}
+}
+int getWeekDay(int year,int month,int day)// 得到该日期是星期几 
+{
+	// 基姆拉尔森计算公式
+	int w;// 代表星期 
+	if(month<3)
+	{
+		month+=12;
+		year-=1;
+	} 
+	w=(day+2*month+3*(month+1)/5+year+year/4-year/100+year/400+1)%7;// w的取值范围为0到6，0为星期日，1为星期一 
+	return w;
+}
+void printMonthCalendar()// 得到某年某月的日历 
+{
+	int year,month,day,m,i;
+	loop:system("cls");
+	while(1)
+	{
+		printf("\n请输入年月来查询您要的月份的日历：");
+	    scanf("%d%d",&year,&month);
+	    if(year>=1900&&year<=2100&&month>0&&month<13)
+	    {
+	    	break;
+		}
+		printf("\n输入的年月不合规，请重新输入。");
+	}
+	int firstDay=getWeekDay(year,month,1);
+	int daysMonth=getDays(year,month);
+	printf("          %d年%d月           \n",year,month);
+	printf(" SUN MON TUE WED THU FRI SAT \n");
+
+	for(i=0;i<firstDay;i++)
+	{
+		printf("    ");
+	}
+	for(day=1;day<=daysMonth;day++)
+	{
+		printf("%4d",day);
+		if((day+firstDay)%7==0)// 为星期六时，从下一行输出 
+		{
+			printf(" \n");
+		}
+	}
+	printf("\n");
+	printf("继续查询请输入[1]：");
+	printf("返回菜单请输入[0]：");
+	while(1)
+	{
+		scanf("%d",&m);
+		if(m==1||m==0)
+		{
+			break;
+		}
+		printf("\n输入数字无对应选项，请重新输入。\n");
+	}
+	if(m==0)
+	{
+		return;
+	}
+	if(m==1)
+	{
+		goto loop;
+	}
+}
+void createMonthCalendar(int year,int month)// 得到确定的年份的日历 
+{
+	int daysMonth=getDays(year,month);
+	int firstDay=getWeekDay(year,month,1);
+	int day,i; 
+	printf("         %d年%d月             \n",year,month);
+	printf(" SUN MON TUE WED THU FRI SAT \n");
+	for(i=0;i<firstDay;i++)
+	{
+		printf("    ");
+	}
+	for(day=1;day<=daysMonth;day++)
+	{
+		printf("%4d",day);
+		if((firstDay+day)%7==0&&(day!=daysMonth))
+		{
+			printf("\n");
+		}
+	}
+	printf("\n\n");
+}
+void printYearCalendar()// 得到某年的日历 
+{
+	int year,n,month;
+	loop:system("cls");
+	printf("\n请输入年份来查询您要的年份的日历：");
+	scanf("%d",&year);
+	for(month=1;month<=12;month++)
+	{
+		createMonthCalendar(year,month);
+	}
+	printf("\n");
+	printf("继续查询请输入[1]，");
+	printf("返回菜单请输入[0]：");
+	while(1)
+	{
+		scanf("%d",&n);
+		if(n==1||n==0)
+		{
+			break;
+		}
+		printf("\n输入数字无对应选项，请重新输入。"); 
+	}
+	if(n==1)
+	{
+		goto loop;
+	}
+	if(n==0)
+	{
+		return;
+	}
+}
+void printBlank(int n)// 输出空格 
+{
+	int i;
+	for(i=1;i<=n;i++)
+	{
+		putchar(' ');
+	}
+}
+int menu()
+{
+	int select;
+	system("cls");
+	printBlank(45);
+	printf("日历\n");
+	printBlank(20);
+	printf("******************************************************\n");
+	printBlank(20);
+	printf("[1]年日历查询\n");
+	printBlank(20);
+	printf("[2]月日历查询\n");
+	printBlank(20);
+	printf("[3]目标日期距今还有多少天，是星期几，是否为节日查询\n");
+	printBlank(20);
+	printf("[4]进入备忘录\n");
+	printBlank(20);
+	printf("[0]退出程序\n");
+	printBlank(20);
+	printf("******************************************************\n");
+	printBlank(20);
+	printf("请输入：");
+	scanf("%d",&select);
+	return select;
+}
+void third()
+{
+	int year,month,day,n;
+	loop:system("cls");
+	printf("\n请输入年月日：");
+	scanf("%d%d%d",&year,&month,&day);
+	printf("\n距今天有%d天，",-daysBetweenGivenDateAndNow(year,month,day)); 
+	switch(getWeekDay(year,month,day))
+	{
+		case 0:
+			printf("是星期日，");
+			break;
+		case 1:
+			printf("是星期一，");
+			break;
+		case 2:
+			printf("是星期二，");
+			break;
+		case 3:
+			printf("是星期三，");
+			break;
+		case 4:
+			printf("是星期四，");
+			break;
+		case 5:
+			printf("是星期五，");
+			break;
+		case 6:
+			printf("是星期六，");
+			break;
+		default:
+			printf("不存在,");
+			break;
+	}
+	wang(year,month,day);
+	printf("\n");
+	printf("继续查询请输入[1]，");
+	printf("返回菜单请输入[0]：");
+	while(1)
+	{
+		scanf("%d",&n);
+		if(n==1||n==0)
+		{
+			break;
+		}
+		printf("\n输入数字无对应选项，请重新输入。\n");
+	}
+	if(n==0)
+	{
+		return;
+	}
+	if(n==1)
+	{
+		goto loop;
+	}
+}