/**
* @(#)wannianli.java
*
*
* @author
* @version 1.00 2012/5/9
*/
import java.util.Scanner;
public class wannianli {
public static boolean runnian(int year)/*定义变量*/
{
if(year%4==0&&year%100!=0||year%400==0) /*利用函数判断输入年份是闰年还是平年*/
return true;
else
return false;
}
public static int day1(int year,int month)
{
int a[]={31,28,31,30,31,30,31,31,30,31,30,31};/*定义数组确定12个月每个月的天数*/
if(runnian(year)) /*如果输入年份是闰年*/
a[1]=29;/*二月29天*/
return a[month-1];
}
public static int day2(int year,int month,int day)
{
int i,sum=0;
for(i=1;i<month;i++)
{
sum+=day1(year,i);
}
sum+=day;
return sum;
}
public static int week1(int year,int month,int day)
{
int number=(year-1)+(year-1)/4-(year-1)/100+(year-1)/400+day2(year,month,day);
number%=7;
return number;
}
public static String Week2(int number)
{
switch(number)/*分类一周七天*/
{
case 0:
return "星期日";
case 1:
return "星期一";
case 2:
return "星期二";
case 3:
return "星期三";
case 4:
return "星期四";
case 5:
return "星期五";
case 6:
return "星期六";
default:
return "错误!请您重新输入。";/*不符和上面七种情况的报错提示*/
}
}
public static void x1(int year,int month,int day)
{
int number=week1(year,month,day);
if(runnian(year))
System.out.print("闰年");/*年份为闰年则输出“闰年“*/
else
System.out.print("平年");
System.out.print(year+"年"+month+"月"+day+"日"+Week2(number)+"\n\n");/*按年 月 日输出结果*/
}
public static void x2(int year,int month)
{
int max,number,i,j=1;
max=day1(year,month);
number=week1(year,month,1);
System.out.print(" 星期日 "+" 星期一 "+" 星期二"+" 星期三 "+" 星期四 "+" 星期五 "+" 星期六 "+"\n");/*按照间隔打印日历*/
for(i=0;i<number;i++)
{
System.out.print(" ");
}
while(j<=max)
{
System.out.print(j+"\t\t");
if(i%7==6)
{
System.out.print("\n");
}
i++;
j++;
}
System.out.print("\n\n");
}
public static boolean x3(int year,int month,int day)
{
if(year<0||month<1||month>12||day<1||day>day1(year,month))/*当输入植出现这些情况时*/
return true;
else
return false;
}
public static void nianli(int year)
{
int i;
System.out.print("\n");
for(i=1;i<=12;i++)
{
if(runnian(year))
System.out.print("闰年");
else
System.out.print("平年");
System.out.print(year+"年"+i+"月"+"\n\n");
}
}
public static void yueli(int year,int month)
{
if(runnian(year))
System.out.print("闰年");
else
System.out.print("平年");
System.out.print(year+"年"+month+"月"+"\n\n");
x2(year,month);
}
public static void rili(int year,int month,int day)
{
System.out.print("\n");
x1(year,month,day);
}
public static void main (String[] args)
{
int year,month,day,b;
boolean a;
Scanner sc = new Scanner(System.in);
while(true)
{
System.out.print("\n\n\n\n");
System.out.print(" **********************************************************\n\n");
System.out.print(" * * \n");
System.out.print(" 欢迎进入万年历查询系统 \n");
System.out.print(" * * \n\n");
System.out.print(" **********************************************************\n\n\n");
System.out.print(" 1 年历 2 月历 3 日历 4 退出\n");
System.out.print(" 请输入您的选择<1~4>,按回车键确定: ");
b = sc.nextInt();
switch(b)
{
case 1:/*选择1时*/
System.out.print("\n请输入您要查的年份: ");/*给出输入提示*/
year = sc.nextInt();/*输入查询的年份*/
a=x3(year,1,1);
if(a)
{
System.out.print("错误!请您重新输入。\n");/*输入植异常时报错*/
break;
}
nianli(year);
break;
case 2:/*选择二时*/
System.out.print("\n请输入您要查的年和月，年月之间用空格隔开: ");/*给出输入提示*/
year = sc.nextInt();
month = sc.nextInt();/*输入需要查询的年 月*/
a=x3(year,month,1);
if(a)
{
System.out.print("错误!请您重新输入。\n");
break;
}
yueli(year,month);
break;
case 3:/*选择3时*/
System.out.print("\n请输入您要查的年月日，年月日之间用空格隔开: ");/*给出输入提示*/
year = sc.nextInt();
month = sc.nextInt();
day = sc.nextInt();/*输入年 月 日*/
a=x3(year,month,day);
if(a)
{
System.out.print("错误!请您重新输入。\n");/*输入植异常时报错*/
break;
}
rili(year,month,day);
break;
case 4:
System.exit(0);
default:
System.out.print("错误!请您重新输入。\n\n");
}
}
}
}
心得：虽然此程序是根据一个完整的C语言程序改写的，但是我依然很有成就感。
通过这个程序的改写我开始有点体会到了C语言与java语言的区别之处，对java又有了一个新的印象，很不错！所以，我还要更加努力，学好java！！！
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