196 lines
4.1 KiB
C++
196 lines
4.1 KiB
C++
#include<stdio.h>
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#include<time.h>
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#include<stdbool.h>
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void Menu1()
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{
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printf("请输入一个数字来表示你要进行的操作：\n");
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printf("1.让我看看这一年的日历(单行)\n");
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printf("2.让我看看这一年的日历(双行)\n");
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printf("3.让我看看这天是周几\n");
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printf("4.让我看看这一年是不是闰年\n");
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}//构建菜单
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int main() {
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int menu, year;
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Menu1(); // 显示菜单
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scanf("%d", &menu);
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if (menu == 1) {
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printf("让我看看这一年的日历(单行)\n");
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printf("请输入年份：");
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scanf("%d", &year);
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// 清除输入缓冲区中的换行符
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while (getchar() != '\n');
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if (year <= 0) {
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printf("您输入的年份有误！\n");
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return 1; // 使用返回值表示错误
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}
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}
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int runnian(int n)//记录闰年月份日期
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{
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switch(n)
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{
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case 1:return 31;
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case 2:return 29;
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case 3:return 31;
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case 4:return 30;
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case 5:return 31;
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case 6:return 30;
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case 7:return 31;
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case 8:return 31;
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case 9:return 30;
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case 10:return 31; }
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}
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int pingnian(int year,int month)//记录平年月份日期
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{
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if (year==1582&&month==10)
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{
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return 21;//1582年10月只有21天
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}
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switch(month)
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{
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case 1:return 31;
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case 2:return 28;
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case 3:return 31;
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case 4:return 30;
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case 5:return 31;
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case 6:return 30;
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case 7:return 31;
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case 8:return 31;
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case 9:return 30;
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case 10:return 31;
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case 11:return 30;
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case 12:return 31;
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}
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}
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void run(int week)//闰年日历输出
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{
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int n=0;//记录换行次数
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int w=week;
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int i,j,k;
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for(i=1;i<=12;i++)
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{
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printf("%d月\n",i);
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printf("日 一 二 三 四 五 六\n") ;
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for(k=0;k<w;k++)//空格对齐
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{
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printf(" ");
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n++;
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}
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for(j=1;j<=runnian(i);j++){//输出每月的天
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if(n%7==0){
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printf("\n");
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}
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printf("%d ",j);
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n++;
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}
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w=(w+runnian(i))%7;//周数
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n=n-w;
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printf("\n\n");
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}
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}
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void ping(int year)//平年日历输出
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{
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int n=0;//记录换行
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int w=getFirstDayOfYear(year);//获取该年第一天是星期几
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int i,j,k;
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for(i=1;i<=12;i++)
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{
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printf("%d月\n", i);
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printf("Sun Mon Tue Wed Thu Fri Sat\n");
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for (k=0;k<w;k++)
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{
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printf(" ");
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n++;
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}
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for (j=1;j<=pingnian(year,i);j++)
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{//输出每月的天
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if(n%7==0) // 七天换行
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{
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printf("\n");
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}
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printf("%d ",j);
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n++;
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}
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w=(w+pingnian(year,i))%7;
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n=n-w;
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printf("\n\n");
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}
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}
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// 获取某个月的天数
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int getDaysInMonth(int year, int month) {
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switch (month) {
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case 1: case 3: case 5: case 7: case 8: case 10: case 12:
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return 31;
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case 4: case 6: case 9: case 11:
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return 30;
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case 2:
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return isLeapYear(year) ? 29 : 28;
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default:
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return 0; // 不会发生，只是为了完整性
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}
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}
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int main() {
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int year;
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printf("Enter the year: ");
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scanf("%d", &year);
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printCalendar(year);
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}
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if(menu==3)
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{
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int weekday=week(year,month,day);
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else if(menu==3)
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{
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int year,month,day;
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{printf("查询某年某月某日的日期是周几\n");
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scanf("%d %d %d",&year,&month,&day);
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if(month<3)
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{
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year--;
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month+=12;
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printf("%d",year);//一年中前两个月较为特殊归入前一年内计算（1月—— 13月，2 月—— 14月
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}
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else
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scanf("%d %d %d",&year,&month,&day);
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do
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{
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int y,c;
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int week;
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y=year/100;
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c=year%100;
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if(year<1582&&month<10&&day<4)
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week=(day+1+2*month+3*(month+1)/5+y+y/4+5) % 7;
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else
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week=(day+1+2*month+3*(month+1)/5+y+y/4-y/100+y/400)%7;//利用蔡乐公式计算某年某月某日的日期是周几
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do{
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switch(week)
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{
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case 1:printf("Monday");break;
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case 2:printf("Tuesday");break;
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case 3:printf("Wednesday");break;
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case 4:printf("Thursday");break;
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case 5:printf("Friday");break;
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case 6:printf("Saturday");break;
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case 7:printf("Sunday");break;
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default:break;
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}
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}while(week>0&&week<8);//利用循环得到某年某月某日的日期是周几
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}
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if (menu == 4) {
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printf("4.让我看看这一年是不是闰年\n");
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{
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int year,month,day;
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printf("请输入一个年份，判断该年是否为闰年");
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if((year%4==0&&year%100!=0)||(year%400==0))//判断是闰年还是平年
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{printf("是闰年");}
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else
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{printf("不是闰年");}
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}
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return 0;
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}
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