putpixel() function
putpixel function plots a pixel at location (x, y) of specified color.
Declaration of putpixel() function
void putpixel(int x, int y, int color);
For example if we want to draw a GREEN color pixel at (35, 45) then we will write putpixel(35, 35, GREEN); in our c program, putpixel function can be used to draw circles, lines and ellipses using various algorithms.
C programming code for putpixel()
#include<graphics.h>
#include<conio.h>
main()
{
int gd = DETECT, gm;
initgraph(&gd, &gm, "C:\\ TurboC3\\BGI");
putpixel(25, 25, RED);
getch();
closegraph();
return 0;
}