C语言，获取HTML源代码

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

// 回调函数，用于处理HTTP响应内容
size_t write_callback(void *contents, size_t size, size_t nmemb, void *userp) {
    size_t total_size = size * nmemb;
    printf("%.*s", total_size, (char*)contents);
    return total_size;
}

int main() {
    CURL *curl;
    CURLcode res;

    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();
    if (curl) {
        // 设置要访问的网页URL
        curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com");
        // 设置回调函数
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);

        res = curl_easy_perform(curl);
        if (res != CURLE_OK) {
            fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
        }

        curl_easy_cleanup(curl);
    }

    curl_global_cleanup();
    return 0;
}