trouble including "iostream" "fstream"

[NewToGNU]

I am having some trouble including "iostream" "fstream" to my code.

I tried the following ways and base times it did not work. What is the
problem?

test.cc:
=======
....
#include <iostream.h>
#include <fstream.h>
.....

>g++ test.cc

test.cc:8: iostream.h: No such file or directory
test.cc:9: fstream.h: No such file or directory

>gcc test.cc

test.cc:8: iostream.h: No such file or directory
test.cc:9: fstream.h: No such file or directory

 test.cc:
=======
....
#include <iostream>
#include <fstream>
using namespace std;
using std::cout;
.....
....

>g++ test.cc

test.cc:8: iostream: No such file or directory
test.cc:9: fstream: No such file or directory

>gcc test.cc

test.cc:8: iostream: No such file or directory
test.cc:9: fstream: No such file or directory