Y2038

eot.c

#include <stdio.h>
#include <time.h>
#include <limits.h>
#include <math.h>

int main(void)
{
   time_t t = time(NULL);
   time_t end = 2147483647;

   printf("[props]\n");
   printf("2^31-1: %d\n", (int)(pow(2.0, 31.0) - 1));
   printf("INT_MAX: %d\n", INT_MAX);
   printf("time_t size: %zd bit\n\n", sizeof(time_t) * 8);

   printf("[now]\n");
   printf("form: %s", ctime(&t));
   printf("unix: %ld\n", t);

   printf("\n[end date]\n");
   printf("form: %s", ctime(&end));
   printf("unix: %ld\n", end);

   end += 1;
   printf("\n[end date + 1]\n");
   printf("form: %s", ctime(&end));
   printf("unix: %ld\n", end);

   return 0;
}