C++中给定年份的打印日历-yiteyi-C++库

先决条件：查找给定日期的星期几 问题： 打印任何给定年份的日历。该程序应该能够打印任何输入年份的日历。 实施：

null

CPP

                         // A C++ Program to Implement a Calendar                       
                         // of an year                       
                         #include<bits/stdc++.h>                       
                         using                                     namespace                                     std;                       
           
                         /*A Function that returns the index of the day                       
                                                 of the date- day/month/year                       
                                                 For e.g-                       
           
                                                 Index     Day                       
                                                 0         Sunday                       
                                                 1         Monday                       
                                                 2         Tuesday                       
                                                 3         Wednesday                       
                                                 4         Thursday                       
                                                 5         Friday                       
                                                 6         Saturday*/                       
                         int                                     dayNumber(                                     int                                     day,                                     int                                     month,                                     int                                     year)                       
                         {                       
           
                                                 static                                     int                                     t[] = { 0, 3, 2, 5, 0, 3, 5, 1,                       
                                                 4, 6, 2, 4 };                       
                                                 year -= month < 3;                       
                                                 return                                     ( year + year/4 - year/100 +                       
                                                 year/400 + t[month-1] + day) % 7;                       
                         }                       
           
                         /*                       
                                                 A Function that returns the name of the month                       
                                                 with a given month number                       
           
                                                 Month Number     Name                       
                                                 0                January                       
                                                 1                February                       
                                                 2                March                       
                                                 3                April                       
                                                 4                May                       
                                                 5                June                       
                                                 6                July                       
                                                 7                August                       
                                                 8                September                       
                                                 9                October                       
                                                 10               November                       
                                                 11               December */                       
                         string getMonthName(                                     int                                     monthNumber)                       
                         {                       
                                                 string months[] = {                                     "January"                                     ,                                     "February"                                     ,                                     "March"                                     ,                       
                                                 "April"                                     ,                                     "May"                                     ,                                     "June"                                     ,                       
                                                 "July"                                     ,                                     "August"                                     ,                                     "September"                                     ,                       
                                                 "October"                                     ,                                     "November"                                     ,                                     "December"                       
                                                 };                       
           
                                                 return                                     (months[monthNumber]);                       
                         }                       
           
                         /* A Function to return the number of days in                       
                                                 a month                       
           
                                                 Month Number     Name        Number of Days                       
                                                 0                January     31                       
                                                 1                February    28 (non-leap) / 29 (leap)                       
                                                 2                March       31                       
                                                 3                April       30                       
                                                 4                May         31                       
                                                 5                June        30                       
                                                 6                July        31                       
                                                 7                August      31                       
                                                 8                September   30                       
                                                 9                October     31                       
                                                 10               November    30                       
                                                 11               December    31                       
           
                         */                       
                         int                                     numberOfDays (                                     int                                     monthNumber,                                     int                                     year)                       
                         {                       
                                                 // January                       
                                                 if                                     (monthNumber == 0)                       
                                                 return                                     (31);                       
           
                                                 // February                       
                                                 if                                     (monthNumber == 1)                       
                                                 {                       
                                                 // If the year is leap then February has                       
                                                 // 29 days                       
                                                 if                                     (year % 400 == 0 ||                       
                                                 (year % 4 == 0 && year % 100 != 0))                       
                                                 return                                     (29);                       
                                                 else                       
                                                 return                                     (28);                       
                                                 }                       
           
                                                 // March                       
                                                 if                                     (monthNumber == 2)                       
                                                 return                                     (31);                       
           
                                                 // April                       
                                                 if                                     (monthNumber == 3)                       
                                                 return                                     (30);                       
           
                                                 // May                       
                                                 if                                     (monthNumber == 4)                       
                                                 return                                     (31);                       
           
                                                 // June                       
                                                 if                                     (monthNumber == 5)                       
                                                 return                                     (30);                       
           
                                                 // July                       
                                                 if                                     (monthNumber == 6)                       
                                                 return                                     (31);                       
           
                                                 // August                       
                                                 if                                     (monthNumber == 7)                       
                                                 return                                     (31);                       
           
                                                 // September                       
                                                 if                                     (monthNumber == 8)                       
                                                 return                                     (30);                       
           
                                                 // October                       
                                                 if                                     (monthNumber == 9)                       
                                                 return                                     (31);                       
           
                                                 // November                       
                                                 if                                     (monthNumber == 10)                       
                                                 return                                     (30);                       
           
                                                 // December                       
                                                 if                                     (monthNumber == 11)                       
                                                 return                                     (31);                       
                         }                       
           
                         // Function to print the calendar of the given year                       
                         void                                     printCalendar(                                     int                                     year)                       
                         {                       
                                                 printf                                     (                                     "         Calendar - %d"                                     , year);                       
                                                 int                                     days;                       
           
                                                 // Index of the day from 0 to 6                       
                                                 int                                     current = dayNumber (1, 1, year);                       
           
                                                 // i --> Iterate through all the months                       
                                                 // j --> Iterate through all the days of the                       
                                                 //       month - i                       
                                                 for                                     (                                     int                                     i = 0; i < 12; i++)                       
                                                 {                       
                                                 days = numberOfDays (i, year);                       
           
                                                 // Print the current month name                       
                                                 printf                                     (                                     "  ------------%s-------------"                                     ,                       
                                                 getMonthName (i).c_str());                       
           
                                                 // Print the columns                       
                                                 printf                                     (                                     "  Sun  Mon  Tue  Wed  Thu  Fri  Sat"                                     );                       
           
                                                 // Print appropriate spaces                       
                                                 int                                     k;                       
                                                 for                                     (k = 0; k < current; k++)                       
                                                 printf                                     (                                     "     "                                     );                       
           
                                                 for                                     (                                     int                                     j = 1; j <= days; j++)                       
                                                 {                       
                                                 printf                                     (                                     "%5d"                                     , j);                       
           
                                                 if                                     (++k > 6)                       
                                                 {                       
                                                 k = 0;                       
                                                 printf                                     (                                     ""                                     );                       
                                                 }                       
                                                 }                       
           
                                                 if                                     (k)                       
                                                 printf                                     (                                     ""                                     );                       
           
                                                 current = k;                       
                                                 }                       
           
                                                 return                                     ;                       
                         }                       
           
                         // Driver Program to check above functions                       
                         int                                     main()                       
                         {                       
                                                 int                                     year = 2016;                       
                                                 printCalendar(year);                       
           
                                                 return                                     (0);                       
                         }                       

输出：

 Calendar - 2016  ------------January-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat                             1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31  ------------February-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat         1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29  ------------March-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat              1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31  ------------April-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat                             1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30  ------------May-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31  ------------June-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat                   1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30  ------------July-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat                             1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31  ------------August-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat         1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31  ------------September-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat                        1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30  ------------October-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat                                  1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31  ------------November-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat              1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30  ------------December-------------  Sun  Mon  Tue  Wed  Thu  Fri  Sat                        1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31

时间复杂性 –O（1）。所用的时间不取决于输入年份。任何一年都是一样的。 辅助空间 –O（1）本文由 拉希特·巴尔维里亚 .如果你喜欢GeekSforgek，并想贡献自己的力量，你也可以使用写极客。组织或者把你的文章寄去评论-team@geeksforgeeks.org.看到你的文章出现在Geeksforgeks主页上，并帮助其他极客。如果您发现任何不正确的地方，或者您想分享有关上述主题的更多信息，请写下评论。

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