Untitled

#include<graphics.h>
#include<conio.h>
#include<stdio.h>
int main()
{
int gd=DETECT,gm;
int x,y,dqp,dsp,sp,q,dq,i,dp;
int a1,a2,b1,b2,c1,c2,EQprice;
char str[25];
initgraph(&gd, &gm,"C:\\turboc3\\bgi");
x=getmaxx()/2;
y=getmaxy()/2;
setcolor(3);
line(x,y,x,0);
line(x,y,x+500,y);
outtextxy(x-10,y,"0");
outtextxy(x+300,y+2,"Q");
outtextxy(x-10,y-200,"P");
// Supply curve
sp=y-20;
dsp=4;
q=x+10;
dq=10;
for(i=0;i<150;i++)
{
 putpixel(q,sp,CYAN);
 q=q+dq;
 sp=sp-dsp;
}
//Demand Curve
dp=y-200;
dqp=6;
q=x+10;
dq=10;
for(i=0;i<150;i++)
{
 putpixel(q,dp,WHITE);
 q=q+dq;
 dp=dp+dqp;
 }
// As per given points of line
a1=10;b1=-4;c1=-160;
a2=10;b2=6;c2=-1940;
EQprice=((c1*a2-c2*a1)/((a1*b2)-(a2*b1)));
sprintf(str,"Equivalent price=%d",EQprice);
setcolor(GREEN);
outtextxy(x-200,y-100,str);

getch();
closegraph();

return 0;
}