int main(int argc, char *argv[])
{
    cos_pool_t *p = NULL;
    int is_cname = 0;
    cos_status_t *s = NULL;
    cos_request_options_t *options = NULL;
    cos_string_t bucket;
    cos_string_t object;
    cos_table_t *resp_headers = NULL;
    cos_table_t *headers = NULL;
    cos_string_t file;
    cos_string_t download_file;
    // Initialize
    if (cos_http_io_initialize(NULL, 0) != COSE_OK) {
       exit(1);
    }
    cos_pool_create(&p, NULL);
    // Initialize the request options
    options = cos_request_options_create(p);
    options->config = cos_config_create(options->pool);
    cos_str_set(&options->config->endpoint, "cos.ap-guangzhou.myqcloud.com"); // Your endpoint
    cos_str_set(&options->config->access_key_id, "SECRETID");// Your SecretId 
    cos_str_set(&options->config->access_key_secret, "SECRETKEY"); // Your SecretKey
    cos_str_set(&options->config->appid, "APPID");// Your APPID
    options->config->is_cname = is_cname;
    options->ctl = cos_http_controller_create(options->pool, 0);
    cos_str_set(&bucket, "<BucketName-APPID>");// Your bucket name in the format: BucketName-APPID

    // Set headers for server-side SSE-COS encryption
    headers = cos_table_make(p, 1);
    apr_table_add(headers, "x-cos-server-side-encryption", "AES256");

    cos_str_set(&file, "example1.txt");// Your filename
    cos_str_set(&object, "example_object");// Your object name

    // Upload an object
    s = cos_put_object_from_file(options, &bucket, &object, &file, headers, &resp_headers);
    if (cos_status_is_ok(s)) {
        printf("put object succeeded\\n");
    } else {
        printf("put object failed\\n");
    }

    // Download an object
    cos_str_set(&download_file, "example2.txt");
    s = cos_get_object_to_file(options, &bucket, &object, NULL, NULL, &download_file, &resp_headers);
    if (cos_status_is_ok(s)) {
        printf("get object succeeded\\n");
    } else {
        printf("get object failed\\n");
    }

    cos_pool_destroy(p);

    cos_http_io_deinitialize();
    return 0;
}

int main(int argc, char *argv[])
{
    cos_pool_t *p = NULL;
    int is_cname = 0;
    cos_status_t *s = NULL;
    cos_request_options_t *options = NULL;
    cos_string_t bucket;
    cos_string_t object;
    cos_table_t *resp_headers = NULL;
    cos_table_t *headers = NULL;
    cos_string_t file;
    cos_string_t download_file;
    // Initialize
    if (cos_http_io_initialize(NULL, 0) != COSE_OK) {
       exit(1);
    }
    cos_pool_create(&p, NULL);
    // Initialize the request options
    options = cos_request_options_create(p);
    options->config = cos_config_create(options->pool);
    cos_str_set(&options->config->endpoint, "https://cos.ap-guangzhou.myqcloud.com"); // Your endpoint, which requires requests to be sent over HTTPS
    cos_str_set(&options->config->access_key_id, "SECRETID");// Your SecretId 
    cos_str_set(&options->config->access_key_secret, "SECRETKEY"); // Your SecretKey
    cos_str_set(&options->config->appid, "APPID");// Your APPID
    options->config->is_cname = is_cname;
    options->ctl = cos_http_controller_create(options->pool, 0);
    cos_str_set(&bucket, "<BucketName-APPID>");// Your bucket name in the format: BucketName-APPID

    // Set headers for SSE-C encryption
    headers = cos_table_make(p, 3);
    apr_table_add(headers, "x-cos-server-side-encryption-customer-algorithm", "AES256");
    apr_table_add(headers, "x-cos-server-side-encryption-customer-key", "MDEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkNERUY=");// Replace with your own Base64-encoded server-side encryption key
    apr_table_add(headers, "x-cos-server-side-encryption-customer-key-MD5", "U5L61r7jcwdNvT7frmUG8g==");// Replace with the Base64-encoded MD5 hash of your own server-side encryption key

    cos_str_set(&file, "example1.txt");// Your file name
    cos_str_set(&object, "example_object");// Your object name

    // Upload an object
    s = cos_put_object_from_file(options, &bucket, &object, &file, headers, &resp_headers);
    if (cos_status_is_ok(s)) {
        printf("put object succeeded\\n");
    } else {
        printf("put object failed\\n");
    }

    // Download an object, which also requires the headers for server-side encryption
    cos_str_set(&download_file, "example2.txt");
    s = cos_get_object_to_file(options, &bucket, &object, headers, NULL, &download_file, &resp_headers);
    if (cos_status_is_ok(s)) {
        printf("get object succeeded\\n");
    } else {
        printf("get object failed\\n");
    }

    cos_pool_destroy(p);

    cos_http_io_deinitialize();
    return 0;
}