aide sur la compilation

bonjour tous le monde
voila mon code :

Code:

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#include<graphics.h> char c; main() { int graphdriver; int graphmode; int triangle[8]; graphdriver=0; graphmode=9; initgraph(&graphdriver,&graphmode,""); cleardevice(); outtextxy(250,5,"presentation graphique avec le language c"); circle(85,100,70); c=getch(); closegraphe(); }

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Citation:

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11 C:\Documents and Settings\mustafa\Bureau\gra.cpp `initgraph' undeclared (first use this function)
(Each undeclared identifier is reported only once for each function it appears in.)
12 C:\Documents and Settings\mustafa\Bureau\gra.cpp `cleardevice' undeclared (first use this function)
13 C:\Documents and Settings\mustafa\Bureau\gra.cpp `outtextxy' undeclared (first use this function)
14 C:\Documents and Settings\mustafa\Bureau\gra.cpp `circle' undeclared (first use this function)
15 C:\Documents and Settings\mustafa\Bureau\gra.cpp `getch' undeclared (first use this function)
16 C:\Documents and Settings\mustafa\Bureau\gra.cpp `closegraphe' undeclared (first use this function)

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ou est le probleme ? comme information ( j'ai pas le fichier headers graphics.h dans le dossier include ) (c'est ça le probleme ?) est ce que je peu l'importer d'une notre source ?
merci