First Program in C Graphics

                                                     Before start first program of C Graphics we need to understand its basic structure to write program. In C graphics basic unit is Pixel. and it has 640 column and 480 rows. 

#include<stdio.h>
#include<graphics.h>

void main()
{
       int gd=DETECT,gm;
       initgraph(&gd, &gm, "C://TC//BGI");
       line(0,0,200,200);
       getch();
       closegraph();
}

Brief Introduction of program.