### Example (utime -- Set Modification Time)

This example sets the last modification time of file utime.dat to the current time. It prints an error message if it cannot.

    #include <sys\types.h>
    #include <sys\utime.h>
    #include <sys\stat.h>
    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>

    #define  FILENAME      "utime.dat"

    int main(void)
    {
       struct utimbuf ubuf;
       struct stat statbuf;
       FILE *fp;                                              /* File pointer     */

       /* creating file, whose date will be changed by calling utime              */
       fp = fopen(FILENAME, "w");

       /* write Hello World in the file                                           */
       fprintf(fp, "Hello World\n");

       /* close file                                                              */
       fclose(fp);

       /* seconds to Fri Dec 31 23:59:58 1999 from 1970 Jan 1                     */
       ubuf.modtime = 946702799;
       ubuf.actime  = 946702799;

       /* changing file modification time                                         */
       if (-1 == utime(FILENAME, &ubuf)) {
          perror("utime failed");
          remove(FILENAME);
          return EXIT_FAILURE;
       }

       /* display the modification time                                           */
       if (0 == stat(FILENAME, &statbuf)) {
          printf("The file modification time is: %s\n", ctime(&statbuf.st_mtime));
       }
       else
          printf("File could not be found\n");

       remove(FILENAME);
       return 0;

       /****************************************************************************
          The output should be similar to:

          The file modification time is: Fri Dec 31 23:59:58 1999
       ****************************************************************************/
    }