#include <stdio.h>
#include <graphics.h>
 
void main (void)
{
   int GraphDriver = VGA; // driver graphique
   int GraphMode = VGAHI; // mode graphique
   int Res;
   
   // initialisation
   initgraph(&GraphDriver, &GraphMode, "" );
   Res = graphresult();
   closegraph();
       
   if (!Res)
      printf ("Initialisation reussie !\n" );
   else
      printf ("Erreur d'initialisation : %d\n", Res);
}

Turbo C++  Version 1.01 Copyright (c) 1990 Borland International
graph.c:
Turbo Link  Version 3.01 Copyright (c) 1987, 1990 Borland International
Error: Undefined symbol _closegraph in module graph.c
Error: Undefined symbol _graphresult in module graph.c
Error: Undefined symbol _initgraph in module graph.c