#include <jpeglib.h>
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
/**
* 省略前面步骤
*/
/* 8. 结束压缩 + 释放对象 */
jpeg_finish_compress(&cinfo); /* 到这里 EOI(FF D9) 已写入文件尾 */
jpeg_destroy_compress(&cinfo);
const char *tail = "112323";
fwrite(tail, 1, strlen(tail), fp);//直接写数据 strlen()依赖<string.h>头文件
fclose(fp);
free(row);