line example in c

Header file:

    graphics.h

Synopsis:

      void line (int x1, int y1, int x2, int y2);

     

Description:

     line() draws line from (x1, y1) to (x2, y2) using the current drawing color.

line function in c graphics

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

  int main(void) {
        /* request auto detection */
        int graphicDriver = DETECT, graphicMode;
        int i, err, x, y;

        /* initialize graphics and local variables */
        initgraph(&graphicDriver, &graphicMode, "C:/TURBOC3/BGI");

        /* read result of initialization */
        err = graphresult();

        if (err != grOk) {
                /* an error occurred */
                printf("Graphic Error: %s\n",
                                grapherrormsg(err));
                return 0;
        }

        x = 0;
        y = 0;

        /* setting the line style */
        setlinestyle(SOLID_LINE, 1, THICK_WIDTH);

        while (y <= getmaxy()) {
                /* draws line between two given points */
                line(x, y, getmaxx(), y);
                y = y + 25;

                /* sleep for 100 milliseconds */
                delay(100);
        }

        x = 0;

        y = 0;

        while (x <= getmaxx()) {

                /* draws line between two given points */

                line(x, y, x, getmaxy());

                x = x + 25;

                /* sleep for 100 milliseconds */

                delay(100);

        }

        /* clean up */

        getch();

        closegraph();

        return 0;

  }

Output: (line built-in function in c graphics.h)

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