Error in compiling

I try compile this:

Code:

---

#include <iostream.h>

int main()
{
  cout << "Hello World!\n";
  return 0;
}

---

but when try compile i get:

Quote:

---

In file included from /usr/include/c++/3.2/backward/iostream.h:31,
from 11.cpp:1:
/usr/include/c++/3.2/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning use -Wno-deprecated.

---

why? THe program is being compile and work fine but why this erro?

because you are using an old header just use <iostream> instead. After that put using namespace std;

THe book i use learn C++ in 21 days, says iostream.h, can't i find a book thatwill tell them right?
i edit iostream and no i get errors too
these erros:
11.cpp: In function `int main()':
11.cpp:5: `cout' undeclared (first use this function)
11.cpp:5: (Each undeclared identifier is reported only once for each function it appears in.)
thanks

Please read his response.

He told you to put

Code:

---

using namespace std;

---

after the #include part.
The reason you got that error was because cout was not qualified.

You can have a few different styles to it:

Code:

---

//Method 1
#include <iostream>
using namespace std;//qualifies all names to be in namespace std

int main()
{
    cout << "Hello, World!" << endl;
    return 0;
}

---

Code:

---

//Method 2
#include <iostream>
using std::cout;
using std::endl;//pre-qualifies cout and endl

int main()
{
    cout << "Hello, World!" << endl;
    return 0;
}

---

Code:

---

//Method 3
#include <iostream>

int main()
{
    std::cout << "Hello, World!" << std::endl;//inline qualification
    return 0;
}

---

I've heard people argue that method one is not the best to use, because it defeats the whole purpose of having a namespace, but I use it anyway (and just put using namespace ____ when I need to use a different namespace).

The book doesn't say that

thats because the book is old and it does not use the latest standard..

hell.
where can i find the latest standard tutor? or book

you can get the latest book in a book store I assume..

not here in Greece!
in ineternet?

If you had searched the board a little you would have found 100's of threads which discuss abt e-book's tutorials etc to help beginners in C/C++

http://cboard.cprogramming.com/showt...c%2B%2B+e-book

thanks