有没有什么办法可以得到软件里的兑换码

const char* exchangeCode = "ABCDEFGH12345678";

#include <stdio.h>

int main() {
    char exchangeCode[20];
    FILE* file = fopen("exchangeCode.txt", "r");
    if (file) {
        fgets(exchangeCode, sizeof(exchangeCode), file);
        fclose(file);
        printf("Exchange Code: %s\n", exchangeCode);
    } else {
        printf("Unable to open file\n");
    }
    return 0;
}

#include <stdio.h>
#include <curl/curl.h>

int main() {
    CURL *curl;
    CURLcode res;
    char exchangeCode[20];
    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();
    if (curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/exchangeCode.json");
        res = curl_easy_perform(curl);
        if (res == CURLE_OK) {
            printf("Exchange Code: %s\n", exchangeCode);
        } else {
            printf("Unable to get exchange code\n");
        }
        curl_easy_cleanup(curl);
    }
    curl_global_cleanup();
    return 0;
}