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Display Date Time C-Function use-strftime()-function

I was looking for a c function which prints date in format Equivalent to %Y-%m-%d (the ISO 8601 date format). And also want to display The time in a.m. or p.m. notation. As In the POSIX locale this is equivalent to HH:MM:SS pm or am. I got some C code like
curr_time = time( NULL );
strncpy( time_string, ( ctime( &curr_time ) ), MAX_TIME_LENGTH );
time_string[ strlen( time_string ) - 1 ] = 0;
printf("%s:-> ", time_string );
which uses time function and gives time output; put this output in some temp file then read it as desired. Looks complex, need simple solution ahaa..
I discovered strftime() function, which made my time display life easier, rather than previous complex approach. And believe me its just four lines of C code.
declare variables:
struct tm *ptr;
time_t ltime;
char *year,*local_time;

Initialize pointers
Here we go
ltime = time(NULL); /* get current calendar time */
ptr = localtime(&ltime);
printf("%s\n %s",year,local_time);

dig more about strftime - format date and time

size_t strftime(char *s, size_t max, const char *format,
const struct tm *tm);

The strftime() function formats the broken-down time tm according to
the format specification format and places the result in the character
array s of size max.
There are many good options which makes your time display requirement easier.


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Go to /usr/X11R6/lib in my linux PC.1) install ARM toolchain, If not installed
2) Get x11 source from
3) extract all the tar files, using tar -xvzf
4) edit cross.def and host.def files, in cross.def set the paths
of tool chain in host.def file set crossCompile to YES and
DoLoadableServer to NO
5) make shadow directory "build" and link to xc "lndir ../xc"
6) run Make World
error: linux_vm86.c 281 impossible constraint in 'asm'
268 res might be used uninitialized in this function.
fix:comment line 281,
set res=0
error: implicit decleration of function 'SET_FLAG'
fix: comment line 111 in
error:Undefined reference to XF86VidModeQueryVersion in glxinfo
And glxgears
Undefined reference to XF86VidModeQueryVersion in xdriinfo
fix:download into our armtoolchain lib path
and make softlinksln -s
ln -s libX…