使用openssl for Windows C编程无法将X509对象读入临时文件

int _tmain(int argc, _TCHAR* argv[])
{
    X509 *x;
    EVP_PKEY *pkey;
    PKCS12 *p12;
    STACK_OF(X509) *ca=NULL;
    FILE *fp;
    int code;



    CRYPTO_malloc_init();
    SSL_library_init();
    SSL_load_error_strings();
    ERR_load_BIO_strings();
    OpenSSL_add_all_algorithms();
    ERR_load_crypto_strings();


    x = X509_new();


    code = fopen_s(&fp,PRIVATE_CERTIFICATE, "rb"); 
    //fp = fopen(PRIVATE_CERTIFICATE, "rb");

    p12 = d2i_PKCS12_fp(fp, NULL);

    fclose(fp);

    if (!PKCS12_parse(p12, KEYPASS, &pkey, &x, &ca)) {
        printf(" Error while parsing\n");
    }
    PKCS12_free(p12);

    code = fopen_s(&fp,TEMP_STORE_CERTIFICATE, "w"); 



    PEM_write_X509(fp, x);
    fclose(fp);



    //RSA Private Certificate
    fp = fopen(TEMP_STORE_KEY_CERTIFICATE,"w");
    PEM_write_PrivateKey(fp, pkey, NULL, NULL, 0, NULL, NULL);
    fclose(fp);


    return 0;
}
int _tmain(int argc, _TCHAR* argv[])
{
    X509