localtime和localtime_r的差别

#include <cstdlib>

#include <iostream>

#include <time.h>

#include <stdio.h>

using namespace std;

int main(int argc, char *argv[])

{

time_t tNow =time(NULL);

time_t tEnd = tNow + 2500;

//在这里修改程序

//struct tm* ptm = localtime(&tNow);

//struct tm* ptmEnd = localtime(&tEnd);

struct tm* ptm = new struct tm[sizeof(struct tm)];

struct tm* ptmEnd = new struct tm[sizeof(struct tm)];

localtime_r(&tNow, ptm);

localtime_r(&tEnd, ptmEnd);

char szTmp[50] = {0};

strftime(szTmp,50,"%H:%M:%S",ptm);

char szEnd[50] = {0};

strftime(szEnd,50,"%H:%M:%S",ptmEnd);

printf("%s \n",szTmp);

printf("%s \n",szEnd);

system("PAUSE");

return 0;

}