first commit

kechengsheji.c

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+#include <stdio.h>
+#include<string.h>
+#include<time.h>
+
+
+int rulueri(int,int,int);//计算输入数据的儒略日，用以计算据你今天的日期
+void print(int,int);//日历的输出
+int weekday(int ,int ,int );//计算该日为星期几
+int all_day(int ,int );//计算该月有多少天
+void gongneng(int );//执行相应功能
+void jieri(int,int);//判断是否为公历节日
+void xianshi1();//显示功能
+void xianshi2();//显示功能
+void xianshi3();//显示功能
+int panduan();//判断是与否
+int xuanxiang();//记录选项
+int timeyear;
+int timemonth;
+int timeday;
+
+
+int rulueri(int year,int month,int day)//计算输入数据儒略日
+{
+    int b=0;
+    double dd;
+    if(month<=2)
+    {
+        month+=12;//对月份进行修正
+        year-=1;//对年进行修正
+    }
+    b=year/100;
+    b=2-b+year/400;
+    dd=day+0.5000115740;//本日12:00过后才是儒略日的开始（过一秒钟）
+    return (365.25*(year+4716)+0.01)+(30.60001*(month+1))+dd+b-1524.5;//计算儒略日的公式，结果返回儒略日值
+}
+
+
+void print(int week, int day)//输出指定的日历
+{
+    int i=0,j=1;//i:循环变量 j:修正星期数为5,6是的循环范围
+    int date=1;//自加以输出日
+    int flag=week;//用以日历第一行空格
+    printf("日 一 二 三 四 五 六\n");
+    if(week>=5)
+        j+=1;
+    for (i=0; i<(day+week)/7+j; i++)
+    {
+        int j=0;
+        int k=0;
+        for (j=0; j<week; j++)
+        {
+            if (flag!=0)
+            {
+                printf("   ");
+            }
+            flag--;
+        }
+        for (k=0;k<7-week;k++)
+        {
+            printf("%2d ",date);
+            date++;
+            if (date > day)
+            {   printf("\n");
+                break;
+            }
+        }
+        if (date > day)
+        {   printf("\n");
+            break;
+        }        week = 0;
+        printf("\n");
+    }
+}
+
+
+int weekday(int year,int month,int day)//输出该日为星期几
+{    
+	int m,d,y,c,w;//y:年数，m:月数，d:某月内的日数，c:世纪数-1，w:星期
+    m = month;
+    d = day;
+    if(month <= 2) /*对小于2的月份进行修正*/
+    {
+        year--;
+        m = month + 12;
+    }
+    y = year % 100;
+    c = year / 100;
+    w = (y + y / 4 + c / 4 - 2 * c + (13 * (m + 1) / 5) + d - 1) % 7;//蔡勒公式，用以计算星期几
+    if(w < 0) /*修正计算结果是负数的情况*/
+        w += 7;
+    return w;
+}
+
+
+int all_day(int y ,int m)//计算该月的日数
+{
+    int flag = 0;//存放是否为闰年的数
+    int day = 30;
+    if (((y % 4 == 0) && (y % 100 == 0)) || (y % 400 == 0))
+    {
+        flag = 1;
+    }
+    if ((m == 1) || (m == 3) || (m == 5) || (m == 7)
+        || (m == 8) || (m == 10) || (m == 12))
+    {
+        day = 31;
+    }
+    else if ((m == 2) && (flag == 1))
+    {
+        day = 29;
+    }
+    else if ((m == 2) && (flag == 0))
+    {
+        day = 28;
+    }
+    else
+        day = 30;
+    return day;
+}
+
+
+void gongneng(int num)//提供选择，并输出相应数据
+{
+    int year = 0;
+    int month = 0;
+    int week = 0;//用来保存输入月份第一天是周几
+    int dday = 0;//用来保存每月共有多少天
+    int day;
+    switch(num)
+    {
+        case 2:
+            printf("请输入年，月：\n");
+            scanf("%d%d", &year, &month);
+            week = weekday(year, month,1);//计算出某月第一天是星期几
+            dday = all_day(year, month);//用来计算每月共有多少天
+            printf("%d月************************\n",month);
+            print(week, dday);
+            break;
+        case 1:
+            printf("请输入年份：\n");
+            scanf("%d",&year);
+            for(month=1;month<=12;month++)
+            {   printf("%d月********************\n",month);
+                week = weekday(year, month,1);//计算出这个月第一天是星期几
+                dday = all_day(year, month);//用来计算每月共有多少天
+                print(week, dday);
+            }
+            break;
+        case 3:
+            printf("请输入年，月，日:\n");
+            scanf("%d%d%d",&year,&month,&day);
+            if(rulueri(year,month,day)<=rulueri(timeyears(),timemonths(),timedays()))//判断所求日期是否在今天之前
+                printf("距今天%d天\n",rulueri(timeyears(),timemonths(),timedays())-rulueri(year,month,day));
+            else
+                printf("距今天%d天\n",rulueri(year,month,day)-rulueri(timeyears(),timemonths(),timedays()));
+            if(weekday(year,month,day)!=0)//修正星期天0为7
+                printf("该日是星期%d\n",weekday(year,month,day));
+            else
+                printf("该日是星期7\n");
+            jieri(month,day);
+            break;
+    }
+}
+
+
+void jieri(int month,int day)//判断并输出公历节日
+{
+    if(month==1&&day==1)
+        printf("%d月%d日是元旦节\n",month,day);
+    else if(month==3&&day==8)
+        printf("%d月%d日是妇女节\n",month,day);
+    else if(month==3&&day==12)
+        printf("%d月%d日是植树节\n",month,day);
+    else if(month==5&&day==1)
+        printf("%d月%d日是劳动节\n",month,day);
+    else if(month==5&&day==4)
+        printf("%d月%d日是青年节\n",month,day);
+    else if(month==6&&day==1)
+        printf("%d月%d日是儿童节\n",month,day);
+    else if(month==7&&day==1)
+        printf("%d月%d日是建党节\n",month,day);
+    else if(month==8&&day==1)
+        printf("%d月%d日是建军节\n",month,day);
+    else if(month==9&&day==10)
+        printf("%d月%d日是教师节\n",month,day);
+    else if(month==10&&day==1)
+        printf("%d月%d日是国庆节\n",month,day);
+    else
+        printf("该日不是公历节日！\n");
+}
+
+
+void xianshi1()//显示功能
+{
+	printf("\t\t年历显示系统\t\t\n");
+	printf("请选择下列选项：\n");
+	printf("1.输入年份输出该年的日历\n2.输入年月输出该月的日历\n3.输入年月日输出据今天还有多少天，星期几，是否公历节日\n");
+    printf("请输入：");
+}
+
+
+void xianshi2()//显示功能
+{	
+		printf("无法识别！\n");
+}
+
+
+void xianshi3()//显示功能
+{
+	printf("是否继续（继续：Y，结束：N）：\n");
+}
+
+
+int xuanxiang()//记录选项
+{
+	int num;//用来保存选择选项
+	scanf("%d",&num);
+	return num;
+}
+
+
+
+int panduan()//判断是与否
+{
+	char suz[100],y[]="y",n[]="n",Y[]="Y",N[]="N";
+	scanf("%s",suz);
+	if(strcmp(suz,y)==0||strcmp(suz,Y)==0)
+		return 2;
+	else if(strcmp(suz,n)==0||strcmp(suz,N)==0)
+		return 1;
+	else 
+		return 0;
+}
+
+
+
+int timeyears()
+{
+	int year;
+	struct tm *local;
+	time_t t;
+	t=time(NULL);
+	local=localtime(&t);
+	year=local->tm_year+1900;
+	return year;
+}
+
+int timemonths()
+{
+	int month;
+	struct tm *local;
+	time_t t;
+	t=time(NULL);
+	local=localtime(&t);
+	month=local->tm_mon+1;
+	return month;
+}
+
+
+int timedays()
+{
+	int day;
+	struct tm *local;
+	time_t t;
+	t=time(NULL);
+	local=localtime(&t);
+	day=local->tm_mday;
+	return day;
+}
+
+int main()
+{	
+	int x=-1;//储存判断函数返回值
+	while(1)
+	{	xianshi1();    
+		gongneng(xuanxiang());
+		fflush(stdin);
+		xianshi3();
+			while(1)
+			{	
+				x=panduan();
+				fflush(stdin);
+				if(x==0)
+				{	fflush(stdin);
+					xianshi2();
+					xianshi3();
+					continue;
+				}
+				else if(x!=0)
+					break;
+			}
+		
+		 if(x==1)
+			break;
+		else if(x==2)
+			continue;
+	}
+    return 0;
+}