Line on AXES

//Program to Draw Line on axes
#include<stdio.h>
#include<conio.h>
#include<graphics.h>
void main()
{
 int gd=DETECT,gm,midx,midy,i;
 initgraph(&gd,&gm,"C:\\TurboC3\\BGI");
 midx=getmaxx()/2; midy=getmaxy()/2;
 setcolor(YELLOW);
 line(midx-200,midy,midx+200,midy);
 line(midx,midy-200,midx,midy+200);
 outtextxy(midx+198,midy-3,"> X-AXIS");
 outtextxy(midx-200,midy-3,"<");
 outtextxy(midx-3,midy-200,"^  Y-AXIS");
 outtextxy(midx-40,midy+8,"(0,0)");
 circle(midx,midy,3);
 setcolor(WHITE);
 line(midx+70,midy-50,midx-100,midy-180);
 circle(midx+70,midy-50,5);
 circle(midx-100,midy-180,5);
 outtextxy(midx+80,midy-53,"(70,50)");
 outtextxy(midx-190,midy-182,"(-100,180)");
 setcolor(GREEN);
 setlinestyle(1,4,1);
 line(midx,midy-50,midx+70,midy-50);
 line(midx+70,midy,midx+70,midy-50);
 line(midx-100,midy,midx-100,midy-180);
 line(midx-100,midy-180,midx,midy-180);
 outtextxy(midx+25,midy+10,"70");
 outtextxy(midx+5,midy-30,"50");
 outtextxy(midx-70,midy+10,"100");
 outtextxy(midx-28,midy-100,"180");
 setcolor(WHITE);
 for(i=-180;i<=180;i=i+10)
 {
  line(midx+i,midy-4,midx+i,midy+4);
  line(midx-4,midy+i,midx+4,midy+i);
 }
 getch();
 closegraph();
}