Programming

#include <stdio.h>
#include <stdint.h>
#include <iostream.h>
struct stat     statbuf;
struct tm      *tm;
char            datestring[256];
int  main()
{
    stat('/temp/new/temp1.txt', &statbuf);
    tm = localtime(&statbuf.st_mtime);

}

stat("/temp/new/temp1.txt", &statbuf);

struct stat st;  // declaration of the stat
struct tm *tm; //declaration of tm pointer

char getts(char *filename1)
{
   char datestring[256];
   stat(filename1, &st);
   tm=localtime(&st.st_mtime);
   strftime(datestring,sizeof(datestring),"%Y-%m-%d-%H.%M.%S" , tm);
   return datestring;
}

struct stat st;  // declaration of the stat
struct tm *tm; //declaration of tm pointer

char getts(char *filename1)
{
   char datestring[256];
   stat(filename1, &st);
   tm=localtime(&st.st_mtime);
   strftime(datestring,sizeof(datestring),"%Y-%m-%d-%H.%M.%S" , tm);
   return datestring;
}

char* getts(char *filename1)
{                                                                               
   static char datestring[256]; /* or make it global */
   stat(filename1, &st);                                                        
   tm=localtime(&st.st_mtime);                                                  
   strftime(datestring,sizeof(datestring),"%Y-%m-%d-%H.%M.%S" , tm);
   return datestring;                                                        
}

char* getts(char *filename1, char *datestring, size_t datestringsize)
{                                                                               
   struct stat st; /* st and tm can not be global if you want to make this function */  
   struct tm tm; /* thread safe, so make them local.                                          */

   stat(filename1, &st);
/* use the reentrant (thread safe) version of localtime, localtime_r */
   localtime_r(&st.st_mtime, &tm);
   strftime(datestring,datestringsize,"%Y-%m-%d-%H.%M.%S" , &tm);
  /* now you are returning a pointer to a user allocated buffer. User can do anything (change it) safely */ 
  return datestring;                                                        
}

int
main(int argc, char *argv[])
{ 
/* user allocated buffer */
char datestring[256];

  puts(getts("demo.c", datestring, sizeof(datestring)));
  return 0;
}