如何在C中打印ASN.1 UPER消息字段的字段？

typedef struct {
    int id;
    char name[50];
    double price;
} Product;

asn1c -pdu=auto MyModule.asn1

#include <stdio.h>
#include "MyModule.h"

int main() {
    // 创建Product结构体的实例
    Product product;
    product.id = 1;
    strcpy(product.name, "Example Product");
    product.price = 9.99;

    // 打印编码后的ASN.1消息字段
    ASN__PRIMASK_SET(ASN_PRIMASK_UNDEF);
    size_t encoded_length = uper_encode_to_buffer(&asn_DEF_Product, &product, buffer, sizeof(buffer));
    for (size_t i = 0; i < encoded_length; i++) {
        printf("%02x ", buffer[i]);
    }
    printf("\n");

    // 打印解码后的字段值
    Product decoded_product;
    asn_dec_rval_t decode_result = uper_decode(NULL, &asn_DEF_Product, (void **)&decoded_product, buffer, encoded_length);
    if (decode_result.code == RC_OK) {
        printf("ID: %d\n", decoded_product.id);
        printf("Name: %s\n", decoded_product.name);
        printf("Price: %.2f\n", decoded_product.price);
    } else {
        printf("Decoding error: %s\n", decode_result.consumed != -1 ? "Incomplete message" : "Failed");
    }

    return 0;
}