What is problem with putimage

The following code compiles but ball does not move what's the problem?

Code:

# include<graphics.h>
# include<conio.h>
# include<alloc.h>
int main()
{
int gd=DETECT,gm,mx,my,radius,area,x,y;
char *buff;
initgraph(&gd,&gm,"");
mx=getmaxx();
my=getmaxy();
radius=4;
rectangle(0,0,mx,my);
bar(253,450,317,454);
setcolor(RED);
setfillstyle(SOLID_FILL,RED);
circle(304,404,radius);
floodfill(304,404,RED);
area=imagesize(6,6,30,30);
buff= malloc(area);
getimage(6,6,30,30,buff);
x=25;
y=25;
while(!kbhit())
{
putimage(x,y,buff,XOR_PUT);
x=x*20;
y=y*20;
putimage(x,y,buff,XOR_PUT);
}
getch();
return;
}

is any problem with getimage or putimage?

Now i modify the code but it does not animate!!!
[code]
# include<graphics.h>
# include<conio.h>
# include<alloc.h>
# include<dos.h>
int main()
{
int gd=DETECT,gm,mx,my,radius,area,x=304,y=404;
char *buff;
initgraph(&gd,&gm,"");
mx=getmaxx();
my=getmaxy();
radius=4;
rectangle(0,0,mx,my);
bar(253,450,317,454);
setcolor(RED);
setfillstyle(SOLID_FILL,RED);
circle(304,404,radius);
floodfill(304,404,RED);
area=imagesize(280,391,317,419);
buff= malloc(area);
getimage(280,391,317,419,buff);
while(!kbhit())
{
putimage(x,y,buff,XOR_PUT);
delay(5);
x=x*120;
y=y*120;
putimage(x,y,buff,XOR_PUT);
}
getch();
return;
}
[\code]

As per u say i modify it again but it do not work...

Code:

# include<graphics.h>
# include<conio.h>
# include<alloc.h>
# include<dos.h>
int main()
{
int gd=DETECT,gm,mx,my,radius,area,x=304,y=404;
char *buff;
initgraph(&gd,&gm,"");
mx=getmaxx();
my=getmaxy();
radius=4;
rectangle(0,0,mx,my);
bar(253,450,317,454);
setcolor(RED);
setfillstyle(SOLID_FILL,RED);
circle(304,404,radius);
floodfill(304,404,RED);
area=imagesize(280,391,317,419);
buff= malloc(area+sizeof(short)+2);
getimage(280,391,317,419,buff);
while(!kbhit())
{
putimage(x,y,buff,XOR_PUT);
delay(5);
x=x*20;
y=y*20;
putimage(x,y,buff,XOR_PUT);
}
getch();
return;
}

It doen not animate still...

Code:

# include<graphics.h>
# include<conio.h>
# include<alloc.h>
# include<dos.h>
int main()
{
int gd=DETECT,gm,mx,my,radius,area,x=304,y=404;
char *buff;
initgraph(&gd,&gm,"");
mx=getmaxx();
my=getmaxy();
radius=4;
rectangle(0,0,mx,my);
bar(253,450,317,454);
setcolor(RED);
setfillstyle(SOLID_FILL,RED);
circle(304,404,radius);
floodfill(304,404,RED);
area=imagesize(280,391,317,419);
buff= malloc(area+sizeof(short)*2);
getimage(280,391,317,419,buff);
while(!kbhit())
{
putimage(x,y,buff,XOR_PUT);
delay(5);
x=x+20;
y=y+20;
putimage(x,y,buff,XOR_PUT);
}
getch();
return;
}

Now i completely stuck...