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/* Bring in gd library functions */
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#include "gd.h"
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/* Bring in standard I/O so we can output the PNG to a file */
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#include <stdio.h>
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int main() {
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/* Declare the image */
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gdImagePtr im;
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/* Declare output files */
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FILE *pngout, *jpegout;
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/* Declare color indexes */
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int black;
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int white;
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/* Allocate the image: 640 pixels across by 640 pixels tall */
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im = gdImageCreate(640, 640);
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/* Allocate the color black (red, green and blue all minimum).
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Since this is the first color in a new image, it will
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be the background color. */
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black = gdImageColorAllocate(im, 0, 0, 0);
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/* Allocate the color white (red, green and blue all maximum). */
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white = gdImageColorAllocate(im, 255, 255, 255);
int blue = gdImageColorAllocate(im, 255, 255, 0);
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/* Draw a line from the upper left to the lower right,
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using white color index. */
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  gdImageLine(im, 0, 0, 639, 639, white);
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   gdImageArc(im, 100, 250, 50, 50, 0, 360, blue);
 gdImageFilledArc(im, 250, 250, 50, 50, 0, 360, blue,gdArc);
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/* Open a file for writing. "wb" means "write binary", important
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under MSDOS, harmless under Unix. */
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pngout = fopen("test.png", "wb");
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/* Do the same for a JPEG-format file. */
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jpegout = fopen("test.jpg", "wb");
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/* Output the image to the disk file in PNG format. */
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gdImagePng(im, pngout);
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/* Output the same image in JPEG format, using the default
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JPEG quality setting. */
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gdImageJpeg(im, jpegout, -1);
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/* Close the files. */
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fclose(pngout);
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fclose(jpegout);
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/* Destroy the image in memory. */
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gdImageDestroy(im);
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}