Need help for a problem

#include <stdio.h>
#include<conio.h>
#include <windows.h>
#include <stdlib.h>

int main()
{
	char *lp_ip	;
	char *lp_cookie;
	char *path;
	char *lib;

	lp_ip			= getenv ("REMOTE_ADDR");
	lp_cookie		= getenv ("HTTP_COOKIE");	
	path			= getenv ("PATH");
	lib				= getenv ("LIB");

	printf("%s\n",lp_ip);
	printf("%s\n",lp_cookie);
	printf("%s\n",path);
	printf("%s\n",lib);
	return 0;

}