1 /******************************************************************* 2 * > File Name: 05-ymd.c 3 * > Author: fly 4 * > Mail: XXXXXXXX@icode.com 5 * > Create Time: Thu Sep 7 16:43:30 2017 6 ******************************************************************/ 7 8 #include <stdio.h> 9 10 // Retrieve year info 11 #define OS_YEAR ((((__DATE__ [7] - '0') * 10 + (__DATE__ [8] - '0')) * 10 12 + (__DATE__ [9] - '0')) * 10 + (__DATE__ [10] - '0')) 13 14 // Retrieve month info 15 #define OS_MONTH (__DATE__ [2] == 'n' ? (__DATE__ [1] == 'a' ? 1 : 6) 16 : __DATE__ [2] == 'b' ? 2 17 : __DATE__ [2] == 'r' ? (__DATE__ [0] == 'M' ? 3 : 4) 18 : __DATE__ [2] == 'y' ? 5 19 : __DATE__ [2] == 'l' ? 7 20 : __DATE__ [2] == 'g' ? 8 21 : __DATE__ [2] == 'p' ? 9 22 : __DATE__ [2] == 't' ? 10 23 : __DATE__ [2] == 'v' ? 11 : 12) 24 25 // Retrieve day info 26 #define OS_DAY ((__DATE__ [4] == ' ' ? 0 : __DATE__ [4] - '0') * 10 27 + (__DATE__ [5] - '0')) 28 29 // Retrieve hour info 30 #define OS_HOUR ((__TIME__ [0] - '0') * 10 + (__TIME__ [1] - '0')) 31 32 // Retrieve minute info 33 #define OS_MINUTE ((__TIME__ [3] - '0') * 10 + (__TIME__ [4] - '0')) 34 35 // Retrieve second info 36 #define OS_SECOND ((__TIME__ [6] - '0') * 10 + (__TIME__ [7] - '0')) 37 38 static char time_str[32]; //= "YYYYMMDDHHMMSSres"; 39 40 char *get_build_time(void) 41 { 42 #if (1) 43 sprintf(time_str,"%02d%02d%02d", OS_YEAR%100, OS_MONTH, OS_DAY); 44 #else 45 sprintf(time_str, "%04d%02d%02d%02d%02d%02d", OS_YEAR, OS_MONTH, OS_DAY, OS_HOUR, OS_MINUTE, OS_SECOND); 46 #endif 47 48 return time_str; 49 } 50 51 int main(int argc, char* argv[]) 52 { 53 printf("build time :%s build date :%s ", __TIME__, __DATE__); 54 printf("%s ", get_build_time()); 55 56 return 0; 57 }