万年历

 

 

 

1 /*
2 @author zengweilin
3 @2011/6/13 万年历
4 */
5 #include " stdio.h "
6 #include " stdlib.h "
7 int isLeapYear( int );
8 int main(){
9 /* i 月份前的空格数目，
10 year 用户输入的年份，
11 day 当前月份的天数，
12 year_start 循环小于year年份的变量，
13 per_year_day 年天数(区分闰年与非闰年),
14 */
15 int i,year,day = 1 ,year_start = 0 ,per_year_day = 0 ;
16 /* temp_1 月份循环变量，
17 temp_2 月份前空格的循环变量
18 */
19 int temp_1 = 0 ,temp_2;
20 /* year_days 统计总天数，
21 month_day 月天数
22 */
23 long year_days = 0 ;
24 int month_day[] = { 31 , 28 , 31 , 30 , 31 , 30 , 31 , 31 , 30 , 31 , 30 , 31 };
25
26 printf( " please input the current year: " );
27 scanf( " %d " , & year);
28
29 /* 计算输入年份之前的天数 */
30 while (year_start < year)
31 {
32 if (isLeapYear(year_start))
33 {
34 per_year_day = 366 ;
35 }
36 else
37 {
38 per_year_day = 365 ;
39 }
40 year_days += per_year_day;
41 year_start ++ ;
42 }
43 /* 列出十二个月份的日期 */
44 for (;temp_1 < 12 ;temp_1 ++ )
45 {
46 switch (temp_1)
47 {
48 case 0 :printf( " \tJanuary<%d>\n " ,year); break ;
49 case 1 :printf( " \tFebruary<%d>\n " ,year); break ;
50 case 2 :printf( " \tMarch<%d>\n " ,year); break ;
51 case 3 :printf( " \tApril<%d>\n " ,year); break ;
52 case 4 :printf( " \tMay<%d>\n " ,year); break ;
53 case 5 :printf( " \tJune<%d>\n " ,year); break ;
54 case 6 :printf( " \tJuly<%d>\n " ,year); break ;
55 case 7 :printf( " \tAugust<%d>\n " ,year); break ;
56 case 8 :printf( " \tSeptember<%d>\n " ,year); break ;
57 case 9 :printf( " \tOctober<%d>\n " ,year); break ;
58 case 10 :printf( " \tNoveber<%d>\n " ,year); break ;
59 case 11 :printf( " \tDecember<%d>\n " ,year); break ;
60 }
61 printf( " Sun Mon Tue Wed Thu Fri Sat\n " );
62 /* 考虑闰年的二月份并输入最终的万年历 */
63 i = year_days % 7 ;
64 temp_2 = 0 ;
65 for (;temp_2 < i;temp_2 ++ )
66 {
67 printf( " " );
68 }
69 day = 1 ;
70 /* 区分闰年与非闰年 */
71 if (isLeapYear(year) && temp_1 == 1 )
72 {
73 while (day <= month_day[temp_1])
74 {
75 /* 防止出现首行是空行 */
76 if (year_days % 7 == 0 && day != 1 )
77 {
78 printf( " \n " );
79 }
80 /* 布局需要 */
81 if (day < 10 )
82 {
83 printf( " %d " ,day);
84 }
85 else
86 {
87 printf( " %d " ,day);
88 }
89 day ++ ;
90 year_days ++ ;
91 }
92 printf( " %d " ,day);
93 year_days ++ ;
94 }
95 else
96 {
97 while (day <= month_day[temp_1])
98 {
99 /* 防止出现首行是空行 */
100 if (year_days % 7 == 0 && day != 1 )
101 {
102 printf( " \n " );
103 }
104 /* 布局需要 */
105 if (day < 10 )
106 {
107 printf( " %d " ,day);
108 }
109 else
110 {
111 printf( " %d " ,day);
112 }
113 day ++ ;
114 year_days ++ ;
115 }
116 }
117 printf( " \n " );
118 }
119 exit( 0 );
120 }
121 /* 判断是否是闰年 */
122 int isLeapYear( int year)
123 {
124 if ((year % 4 == 0 && year % 100 != 0 ) || (year % 400 == 0 ))
125 {
126 return 1 ;
127 }
128 else
129 {
130 return 0 ;
131 }
132 }

转载于:https://www.cnblogs.com/zengge/archive/2011/06/17/2084009.html