Graphics Point Clipping C Program

/* .......Works on Win XP */

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
int tlx,tly,brx,bry,px,py;
void point_clip()
{ int wxmin,wymin,wxmax,wymax;
wxmin=tlx;
wxmax=brx;
wymin=tly;
wymax=bry;
if(px>=wxmin&&px<=wxmax)
if(py>=wymin&&py<=wymax)
putpixel(px,py,RED);
getch();
closegraph();
}
void main(void)
{ int gd=DETECT,gm,xc,yc,r;
clrscr();
printf("Enter the top left coordinate");
scanf("%d%d",&tlx,&tly);
printf("Enter the bottom right coordinate");
scanf("%d%d",&brx,&bry);
printf("\n Enter the point");
scanf("%d%d",&px,&py);
 initgraph(&gd,&gm,"c:\\tc\\bgi");  /*Sometimes it may be "C:\\TC\\BGI" , It depends machine to mac..*/
setbkcolor(YELLOW);
setcolor(RED);
rectangle(tlx,tly,brx,bry);
point_clip();
}