1 #include <time.h>
2 #include <stdio.h>
3
4
5 typedef enum
6 {
7 false = 0,
8 true = 1
9 } bool;
10
11 bool check_date(int year, int month, int day)
12 {
13 if (year < 1900 || month <= 0 || month > 12
14 || day <= 0 || day > 31)
15 return false;
16
17 struct tm tm_new;
18 tm_new.tm_year = year - 1900;
19 tm_new.tm_mon = month - 1;
20 tm_new.tm_mday = day;
21 tm_new.tm_hour = 0;
22 tm_new.tm_min = 0;
23 tm_new.tm_sec = 0;
24
25 time_t time_new = mktime(&tm_new);
26 localtime_r(&time_new, &tm_new);
27
28 if (tm_new.tm_year != year - 1900 || tm_new.tm_mon != month - 1 || tm_new.tm_mday != day)
29 return false;
30 return true;
31 }
