looking for c library for simple graphics (in .deb)

[Jan Krupa <krupa@alpha.sggw.waw.pl>]

Could someone please recommend some graphic library for c (or c++ but
more important for c) ?
Something which can give postscript output or other format which
can be easily printed under debian2.0  and I could use this way 
(similar to this):

#include...
#include<graphics.h>

here goes some code for computing 
and graphics.


Thanks in advance

Jan