MongoDB C Driver

#include <mongoc/mongoc.h>
int main (int argc, char **argv)
{
  mongoc_client_t *client = NULL;
  bson_error_t error = {0};
  mongoc_server_api_t *api = NULL;
  mongoc_database_t *database = NULL;
  bson_t *command = NULL, reply;
  // Initialize the MongoDB C Driver.
  mongoc_init ();
  // Replace the <connection string> with your MongoDB deployment's connection string.
  client = mongoc_client_new("<connection string>");
  // Set the version of the Stable API on the client.
  api = mongoc_server_api_new (MONGOC_SERVER_API_V1);
  if (!mongoc_client_set_server_api (client, api, &error))
  {
	  // Error condition.
	  printf("Error: %s\n", error.message);
	  return 0;
  }
  // Get a handle on the "admin" database.
  database = mongoc_client_get_database (client, "admin");
  
  // Ping the database.
  command = BCON_NEW("ping", BCON_INT32(1));
  if (mongoc_database_command_simple(database, command, NULL, &reply, &error))
  {
    printf("Pinged your deployment. You successfully connected to MongoDB!\n");
  }
  else
  {
    // Error condition.
    printf("Error: %s\n", error.message);
    return 0;
  }
  
  // Perform Cleanup.
  bson_destroy (&reply);
  bson_destroy (command);
  mongoc_database_destroy (database);
  mongoc_client_destroy (client);
  mongoc_cleanup ();
  return 0;
}

#include <mongoc/mongoc.h>
int main (int argc, char **argv)
{
	mongoc_client_t *client = NULL;
	bson_error_t error = {0};
	mongoc_database_t *database = NULL;
	bson_t *command = NULL, reply;
	// Initialize the MongoDB C Driver.
	mongoc_init ();
	// Replace the <connection string> with your MongoDB deployment's connection string.
	client = mongoc_client_new("<connection string>");
	// Get a handle on the "admin" database.
	database = mongoc_client_get_database (client, "admin");
  
	// Ping the database.
	command = BCON_NEW("ping", BCON_INT32(1));
	if (mongoc_database_command_simple(database, command, NULL, &reply, &error))
	{
		printf("Pinged your deployment. You successfully connected to MongoDB!\n");
	}
	else
	{
		// Error condition.
		printf("Error: %s\n", error.message);
		return 0;
	}
  
	// Perform Cleanup.
	bson_destroy (&reply);
	bson_destroy (command);
	mongoc_database_destroy (database);
	mongoc_client_destroy (client);
	mongoc_cleanup ();
	return 0;
}