### Programming Reference/Librarys

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c:graphics.h:drawpoly

## drawpoly

### Syntax of drawpoly

```#include <graphics.h>
void drawpoly(int numpoints, int *polypoints);
```

### Description of drawpoly

```drawpoly draws a polygon with numpoints points, using the current line
style and color.
*polypoints points to a sequence of (numpoints * 2) integers. Each pair
of integers gives the x- and y-coordinates of a point on the polygon.
In order to draw a closed figure with n vertices, you must pass n + 1
coordinates to drawpoly where the nth coordinate is equal to the 0th.```

### Example of drawpoly

```/* drawpoly example */

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

int main(void)
{
/* request autodetection */
int gdriver = DETECT, gmode, errorcode;
int maxx, maxy;

int poly[10];   /* our polygon array */

/* initialize graphics and local variables */
initgraph(&gdriver, &gmode, "");

/* read result of initialization */
errorcode = graphresult();
if (errorcode != grOk){ /* an error occurred */
printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:");
getch();
exit(1); /* terminate with an error code */
}

maxx = getmaxx();
maxy = getmaxy();
poly[0] = 20;     /* first vertex */
poly[1] = maxy / 2;
poly[2] = maxx - 20;    /* second vertex */
poly[3] = 20;
poly[4] = maxx - 50;    /* third vertex */
poly[5] = maxy - 20;
poly[6] = maxx / 2;     /* fourth vertex */
poly[7] = maxy / 2;
poly[8] = poly[0];/* drawpoly doesn't automatically close */

poly[9] = poly[1];/* the polygon, so we close it */

drawpoly(5, poly);   /* draw the polygon */

/* clean up */
getch();
closegraph();
return 0;
}```

```  no output of example at the moment