Hello,
My goal is to post on Twitter via the C programing language.
This is part I don't understand:
CURL *curl;
Where is the "CURL" in the header file and what are it's attributes?
I've attached the example
code for clarification. The code compiles but doesn't actually post and
I'm clueless as to why not?
Yes I have the CONSUMER_KEY, CONSUMER_SECRET,ACCESS_TOKEN and
ACCESS_TOKEN_SECRET.
Also, the WriteCallback what should it do? I've run this code through
the GNU debugger but it gives little or
no insight!
Thanks in advance.
Michael
--
From Michael B's little linux box
/*
Creating a Twitter post using a C program involves interacting with the Twitter
API. Twitter's API requires authentication using OAuth tokens.
Writing a complete C program for this task would be beyond the scope of a
simple response, but I can give you an overview of the steps involved.
1. X **Create a Twitter Developer Account:**
- Go to the [Twitter Developer
portal](https://developer.twitter.com/en/apps) and create a developer account.
- Create a new app to obtain API keys and access tokens.
*/
//2. **Install a C HTTP Library:**
// - You'll need an HTTP library to make requests to the Twitter API. One
option is `libcurl`. You can download it from
[here](https://curl.se/download.html) and follow the installation instructions.
//3. **Include Necessary Headers:**
// ```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <curl/curl.h>
//4. **Define Twitter API Credentials:**
// - Use the API keys and access tokens obtained from the Twitter Developer
portal.
#define CONSUMER_KEY "your_consumer_key"
#define CONSUMER_SECRET "your_consumer_secret"
#define ACCESS_TOKEN "your_access_token"
#define ACCESS_TOKEN_SECRET "your_access_token_secret"
//5. **Create Tweet Function:**
size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
// Handle the response from the Twitter API
return size * nmemb;
}
void postToTwitter(const char *tweet) {
CURL *curl;
CURLcode res;
curl_global_init(CURL_GLOBAL_DEFAULT);
curl = curl_easy_init();
if(curl) {
char url[256];
sprintf(url, "https://api.twitter.com/2/tweets";);
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, "Content-Type:
application/json");
headers = curl_slist_append(headers, "Authorization: Bearer
your_bearer_token");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_POST, 1L);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, tweet);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
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();
}
}
//6. **Make the POST Request:**
int main(void) {
const char *tweet = "{\"status\": \"Hello, Twitter!\"}";
postToTwitter(tweet);
return 0;
}
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