#include <stdio.h>          /* NULL         */#include <time.h>          /* ctime, asctime      */ main(){  time_t now;    /* define 'now'. time_t is probably      * a typedef */             /* Calender time is the number of              * seconds since 1/1/1970    */   now = time((time_t *)NULL);  /* Get the system time and put it         * into 'now' as 'calender time' */   printf("%s", ctime(&now));  /* Format data in 'now'      * NOTE that 'ctime' inserts a      * '\n' */    /*********************************************************************/  /* Here is another way to extract the time/date information */   time(&now);   printf("%s", ctime(&now));  /* Format data in 'now'  */    /*********************************************************************/   {    struct tm *l_time;          l_time = localtime(&now);  /* Convert 'calender time' to      * 'local time' - return a pointer       * to the 'tm' structure. localtime      * reserves the storage for us. */    printf("%s", asctime(l_time));  }    /*********************************************************************/   time(&now);  printf("%s", asctime(localtime( &now  )));    /*********************************************************************/   {    struct tm *l_time;    char string[20];          time(&now);    l_time = localtime(&now);    strftime(string, sizeof string, "%d-%b-%y\n", l_time);    printf("%s", string);  }}  

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