libCurl in C

Dear Friends,

I am using CURL to get HTTP response.
The default output for CURL is stdout, but i am unable to change it to
a variable.

Right now,
I am using a temporary file for this purpose and read it to process it.
Is there any way, by which method i will get CURL output to a string
or any structure?

===================== main.c =====================

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

int
main()
{
	CURL *curl;
	char *data1[512];

	FILE *fp;
	fp = fopen("/tmp/curl","w");

	curl = curl_easy_init();
  	if(curl) {
    		curl_easy_setopt(curl, CURLOPT_URL, "http://127.0.0.1");
    		curl_easy_setopt(curl, CURLOPT_HEADER, 0);
		curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
	    	curl_easy_perform(curl);
	    	curl_easy_cleanup(curl);
  	}

	fclose(fp);    	
	return 0;
}

================================================

Thanks and Regards
Jai