C Studio 是一款流行的開發(fā)工具，它能夠讓開發(fā)者更加方便地進(jìn)行編程工作。在一些應(yīng)用開發(fā)場景中，需要通過請求 JSON 數(shù)據(jù)來進(jìn)行一些操作。接下來，將介紹如何在 C Studio 中請求 JSON 數(shù)據(jù)。

#include#include#include#includetypedef struct {
char *memory;
size_t size;
}MemoryStruct;
static size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp) {
size_t realsize = size * nmemb;
MemoryStruct *mem = (MemoryStruct *)userp;
char *ptr = (char *)realloc(mem->memory, mem->size + realsize + 1);
if (ptr == NULL) {
printf("Not enough memory (realloc returned NULL)\n");
return 0;
}
mem->memory = ptr;
memcpy(&(mem->memory[mem->size]), contents, realsize);
mem->size += realsize;
mem->memory[mem->size] = 0;
return realsize;
}
int main(void) {
CURL *curl_handle;
CURLcode res;
MemoryStruct chunk;
chunk.memory = (char *)malloc(1);
chunk.size = 0;
curl_global_init(CURL_GLOBAL_ALL);
curl_handle = curl_easy_init();
curl_easy_setopt(curl_handle, CURLOPT_URL, "http://my-json-server.typicode.com/typicode/demo/posts");
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
res = curl_easy_perform(curl_handle);
if (res != CURLE_OK) {
fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
}
else {
printf("%lu bytes retrieved\n", (unsigned long)chunk.size);
printf("%.*s", chunk.size, chunk.memory);
}
curl_easy_cleanup(curl_handle);
free(chunk.memory);
curl_global_cleanup();
return 0;
}

以上代碼通過調(diào)用 cURL 庫來進(jìn)行 HTTP 請求，并將獲取到的內(nèi)容存儲在內(nèi)存中。開發(fā)者可以根據(jù)自己的需求對此代碼進(jìn)行修改和擴(kuò)展，以實(shí)現(xiàn)自己的應(yīng)用場景。