diff --git a/Untitled3.cpp b/Untitled3.cpp
new file mode 100644
index 0000000..3b2ae3f
--- /dev/null
+++ b/Untitled3.cpp
@@ -0,0 +1,345 @@
+#include <stdio.h> 
+#include <stdlib.h> 
+#include <math.h>
+int monthdays[12] = {31,28,31,30,31,30,31,31,30,31,30,31} ;
+char yearr(int year) 
+{ 
+if (year%4==0&&year%100||year%400==0)
+return 1;
+else
+return 0; 
+}
+ int midmonthday(int m1 , int m2, int y)
+{
+    int i ;
+    int ds ;
+    ds = 0 ;
+    for(i = m1 + 1 ; i < m2 ; i++)
+    {
+        ds =ds+ monthdays[i-1] ;
+        if(i == 2)
+        {
+            if(yearr(y))
+            {
+                ds++ ;
+            }
+        }
+    }
+    return ds ;
+}
+int SameYearDays(int y1 , int m1 , int d1 , int y2 , int m2 , int d2)
+{
+    int Days ;
+    
+    if(m1 == m2)
+    {
+        Days =abs(d2 - d1)  ;
+    }
+    else
+    {
+        Days = abs(monthdays[m1 - 1] - d1) ;
+        if(m1 == 2)
+        {
+            if(yearr(y1))
+            {
+                Days++ ;
+            }
+        }
+        if((m1 + 1) != m2)
+        {
+            
+            Days += midmonthday(m1 , m2, y1);
+        }
+        Days += d2 ;
+    }
+return Days;
+}
+int GetMidYearDays(int y1,int y2)
+{
+int days=0;
+int i=0;
+for (i=y1+1;i<y2;i++)
+{
+  if (yearr(i-1))
+  {
+   days+=366;
+  }
+  else
+   days+=365;
+}
+return days;
+}
+int distanceYearDays(int y1 , int m1 , int d1 , int y2 , int m2 , int d2)
+{
+int days;
+if (y1==y2)
+{
+  days=SameYearDays( y1 ,m1 ,d1 , y2 , m2 ,d2);
+}
+else
+{
+  days=monthdays[m1+1]-d1;
+  if((y1+1) != y2)
+  {
+   days+=GetMidYearDays(y1,y2);
+  }
+  days+=midmonthday(m1-1,13,y1);
+  if(m2==1)
+  { 
+   days+=d2;
+  }
+  else
+  {
+   days+=midmonthday(1,m2,y2);
+   days+=d2;
+  }  
+}
+return days;
+}
+int printfweek() 
+{ 
+printf("%s\t%s\t%s\t%s\t%s\t%s\t%s\t\n","周日","周一","周二","周三","周四","周五","周六"); 
+}  int GetWeek(int year,int month)
+{
+    int m[12] = {31,28,31,30,31,30,31,31,30,31,30,31};			
+    int day=0,week,i;
+    switch (month)
+    {
+        case 1:
+            day = 1;
+            break;
+        case 2:
+            day = m[0] + 1;
+            break;
+        case 3: case 4: case 5: case 6: case 7: case 8: case 9: case 10: case 11: case 12:
+            if (yearr(year) == true)
+                m[1] = 29;
+            for (i=0;i<month-1;i++)
+            {
+                day = day + m[i];
+            }
+            day = day + 1;
+            break;
+ 
+    }
+    week = ((year-1) + (year-1)/4 - (year-1)/100 + (year-1)/400 + day) % 7;
+    return week;
+}
+int tian(int month,int year) 
+{ 
+int day; 
+switch (month) 
+{ 
+case 1: 
+case 3: 
+case 5: 
+case 7: 
+case 8: 
+case 10: 
+case 12:day=31;break; 
+case 4: 
+case 6: 
+case 9: 
+case 11:day=30;break; 
+case 2:{
+              if(year%400==0||(year%4==0&&year%100!=0))
+			   day=29;
+		     	else
+			   day=28;
+		    	}
+				break; 
+
+} 
+return day; 
+} 
+
+int prifirst(int month,int year) 
+{ 
+int b; 
+if (month<3) 
+{ 
+month=month+12; 
+year--; 
+} 
+b=(1+2*month+3*(month+1)/5+year+year/4-year/100+year/400)%7; 
+return b; 
+} 
+int prtmonth(int month) 
+{ 
+switch (month) 
+{ 
+case 1:printf("%26s\n","一月\n");break; 
+case 2:printf("%26s\n","二月\n");break; 
+case 3:printf("%26s\n","三月\n");break;
+case 4:printf("%26s\n","四月\n");break; 
+case 5:printf("%26s\n","五月\n");break;
+case 6:printf("%26s\n","六月\n");break;
+case 7:printf("%26s\n","七月\n");break;
+case 8:printf("%26s\n","八月\n");break;
+case 9:printf("%26s\n","九月\n");break;
+case 10:printf("%26s\n","十月\n");break; 
+case 11:printf("%26s\n","十一月\n");break; 
+case 12:printf("%26s\n","十二月\n");break;
+} 
+}
+int hello() 
+{ int a;
+  int year,month,i,c,week; 
+  printf("1:查询某一年日历\n2:查询某年某月有几天\n3:查询两天之间相差多少天\n4查询某天是星期几\n5判断是否为节假日\n6输出某年月日历\n");
+  printf("请输入选项：\n") ;
+scanf("%d",&a);
+switch(a)
+{
+  case 1:printf("年份\n:"); 
+      scanf("%d",&year); 
+      for (month=1; month<=12; month++) { 
+      c=1; 
+      prtmonth(month); 
+      printfweek(); 
+      week=prifirst(month,year);
+      if (week!=6) 
+      for (i=0; i<=week; i++) { 
+      printf("\t"); 
+      c++; 
+} 
+ for (i=1; i<=tian(month,year); i++,c++) 
+ { 
+ printf("%d\t",i); 
+ if (c%7==0) 
+ { 
+ printf("\n");
+ } 
+} 
+printf("\n"); 
+} 
+return 0; 
+break;
+case 2:int day;
+ printf("输入年月：\n");
+         scanf("%d%d",&year,&month);
+		 day=tian(month,year);
+	       printf("%d年%d月有%d天",year,month,day);
+	       return 0; 
+	        break;
+case 3:int Year1 ,Month1 ,Day1 ,Year2 ,Month2 ,Day2;
+    int Days ;
+    
+    
+        printf("输入第一个日期(年 月 日)：\n");
+        scanf("%d%d%d",&Year1,&Month1,&Day1);
+        printf("输入第二个日期(年 月 日)：\n");
+        scanf("%d%d%d",&Year2,&Month2,&Day2);
+        Days = distanceYearDays(Year1, Month1,Day1,Year2,Month2,Day2);
+        printf("两个日期相差的天数为：%d\n" , Days);
+    
+			  break;
+	case 4:	 int y,m,d,c,w;
+  printf ("输入年 月 日：");
+  scanf ("%d %d %d", &y, &m, &d);
+  if (m==1||m==2)
+   { 
+    y--;
+    m+=12;
+  }
+  c = y / 100;
+  y = y - c * 100;
+  w = (c/4)-2*c+(y+y/4)+(13*(m+1)/5)+d-1;
+  while(w<0)
+  w += 7;
+  w %= 7;
+  if (w==0)
+   printf ("星期日");
+  else printf ("星期%d\n", w);
+  return 0;
+  break;
+  printf("\n");
+  case 5:	
+ printf("请输入日期:\n");
+ scanf("%d%d%d",&year,&month,&day);
+ switch(month)
+ {
+ case 1:if(day==1)
+ printf("元旦\n");
+ break;
+ case 4:if(day==5)
+ printf("清明\n"); 
+ break;
+ case 5:if(day==1)
+ printf("劳动节\n");
+ break;
+ case 6:if(day==1)
+ printf("儿童节\n");
+ break;
+ case 7:if(day==1)
+ printf("建党节\n");
+ break;
+ case 8:if(day==1)
+ printf("建军节\n");
+ break;
+ case 9:if(day==10)
+ printf("教师节\n");
+ break;
+ case 10:if(day==1)
+ printf("国庆节\n");
+ break;
+ default:printf("error");
+ }printf("\n");
+ 
+ break;
+ case 6:
+    printf("输入年月：");
+    scanf("%d%d",&y,&m);
+    printf("      %d年%d月\n",y,m);
+    printf(" 一 二 三 四 五 六 日\n");
+    week = GetWeek(y,m);
+    if(week == 0)
+        week = 7;									
+    for (i = 1;i < week; i++)
+    {
+        printf("   ");								
+    }
+    int month[12] = {31,28,31,30,31,30,31,31,30,31,30,31};
+    if (yearr(y) == 1)							
+        month[1] = 29;
+    for(i=1;i<=month[m-1];i++)					
+    {
+        printf("%3d",i);
+        if((i+week-1) % 7 == 0)						
+            printf("\n");
+    }
+	printf("\n");
+			  
+}
+
+
+} int main()
+{
+ int x;
+ while (1)
+ {
+  printf("-------------操作选项-----------\n");
+  printf("            1:返回菜单 \n");
+  printf("            2:退出程序 \n");
+  printf("            3:执行操作 \n");
+  printf("\t" );
+ 
+  printf("选择要执行的操作: ");
+  scanf("%d",&x);
+  printf("\n");
+  
+  if(x==2)
+	  break;
+  
+  switch(x)
+  {
+  case 1:  break; 
+  case 3:  hello();break;  
+  default:  
+	  printf("错误输出\n");
+	  break;
+  }
+ }
+ return 0;
+}
+
+
diff --git a/Untitled3.exe b/Untitled3.exe
new file mode 100644
index 0000000..bd587ba
Binary files /dev/null and b/Untitled3.exe differ