,
:
/ /
MLTPY
: y(n)=x1(n)x2(n), x1(n) x2(n) , y(n) .
,


, , ( , C++, , ?!)

?

Code:
 #include<graphics.h>

Int  x1(n),x2(n);
{
grdriver=DETECT;
initgraph(&grdriver,&grmode,"c:\\bc\\bgi");
setcolor(WHITE);
setbkcolor(RED);
for(i=0;i<=100;i++);
{
line(300,300-i,300,300+i);
line(200-i,200,200+i,200);	 //*line(x1,x2)
line(300,100-i); //x1-   
line(400-i,200); //x2-    
delay(20);
};
setcolor(GREEN);
outtextxy(20,20,"grafika");	 //     X  Y ??
.. ( ) ?