Complete C Program to demonstrate surfaces using lines and colors
#include<graphics.h>
#include<conio.h>
#include<dos.h>
#include<alloc.h>
#include<math.h>
void main()
{
int gm, gd=DETECT;
initgraph(&gd,&gm,””);
setviewport(100,100,300,300,0);
for(j=0;j<200;j=j+20)
{
for(i=0;i<=200;++i)
{
if (i%20==0)
setcolor(rand()%16+1);
line(i,j,i,j+20);
}
delay(100);
}
getch();
}