set_color - Sets the specified palette entry to the specified RGB triplet. Allegro game programming

       Sets the specified palette entry to the specified RGB triplet. Unlike the other  palette  functions  this
       doesn't  do  any  retrace synchronisation, so you should call vsync() before it to prevent snow problems.
       Example:

          RGB rgb;
          ...
          vsync();
          set_color(192, &rgb);

       set_color  -  Sets  the  specified  palette  entry to the specified RGB triplet. Allegro game programming
       library.

set_palette(3alleg4),  get_color(3alleg4),  _set_color(3alleg4),   ex12bit(3alleg4),   exrgbhsv(3alleg4),
       exscroll(3alleg4)

Allegro                                           version 4.4.3                               set_color(3alleg4)

#include<allegro.h>voidset_color(intindex,constRGB*p);