如何在C++服务器中解码curl url编码的字符串

#include <iostream>
#include <string>
#include <curl/curl.h>

std::string urlDecode(const std::string& encodedString) {
    CURL* curl = curl_easy_init();
    if (curl) {
        int outLength;
        char* outBuffer = curl_easy_unescape(curl, encodedString.c_str(), encodedString.length(), &outLength);
        std::string decodedString(outBuffer, outLength);
        curl_free(outBuffer);
        curl_easy_cleanup(curl);
        return decodedString;
    }
    return "";
}

std::string encodedString = "Hello%20World%21";
std::string decodedString = urlDecode(encodedString);
std::cout << "Decoded String: " << decodedString << std::endl;