c语言获取当前年月日时分秒

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#include <iostream> using namespace std; #include <stdio.h> #include <time.h> #include <sys/time.h> typedef struct {     int id;   char *ptr;   } OSA_IpcShmHndl; typedef unsigned int Uint32;    #ifndef KB #define KB ((Uint32)1024) #endif #define OSA_IPC_MBX_MSG_SIZE_MAX    (KB) Uint32 OSA_getCurTimeInMsec() {     struct timeval tv;       if (gettimeofday(&tv, NULL) < 0)         return 0;       return tv.tv_sec * 1000 + tv.tv_usec / 1000; } struct timeval OSA_getCurTimeInMsec_64() {     struct timeval tv;     gettimeofday(&tv, NULL);   return tv; } int main() {   struct timeval timestamp = OSA_getCurTimeInMsec_64();   time_t time;   time = timestamp.tv_sec;   char str_t[26] = {0};   struct tm* p_time =localtime(&time);   strftime(str_t,26,"%Y-%m-%d %H:%M:%S\n",p_time);   printf("%s\n",str_t);   cout << "Hello, World!" << endl;   return 0; }