Simple string query

**ozzy34** · 05-13-2004

Hi all

I'm a real newbie to c++ and have the following issue that I was hoping you guys could solve for me.

I want to use strings end up with error :-( Heres my code

#include <iostream.h>
#include <string.h>

int main(int argc, char* argv[])

{

int fred;
string jas;

fred = 0;
cout << "In main\n" << fred;

return 0;

}

When I try and compile this I get error C2065: 'string':undeclared identifier, and this is driving me nuts for something so simple...

Any ideas what I need to do to overcome this? I've hunted through MSDN and it seems to imply that the header I included is correct so something is obviously up...

I have noticed that if I only include <string> I can sucessfully declare a string by doing std::string fred.

Should I always use std::string or should I be able to use the code in my example.

Thanks for advice!!

**hk_mp5kpdw** · 05-13-2004

Use the newer headers, <string.h> is for functions such as strcmp and strcpy and the like... <string> is for the string objects that you are trying to use. Incidentaly the newer version of <string.h> is called <cstring>. Also use <iostream> instead of <iostream.h> and make sure you have something like using namespace std; after all your #include statements.

Code:

#include <iostream>
#include <string>
using namespace std;

int main(int argc, char* argv[])
{
    int fred;
    string jas;

    fred = 0;
    cout << "In main\n" << fred;

    return 0;
}

**ozzy34** · 05-13-2004

Thanks for that, I can get my micky mouse example to work now.

If I could ask a follow on question :-)

I went on a c++ course a while back and they showed me to use the include<iostream.h> method.

Whats the advantage of not putting the .h in the include statments?

(We never touched on namespaces so I think I had better read the FAQ to understand what these do)

Ta

**Kip Neuhart** · 05-13-2004

>Whats the advantage of not putting the .h in the include statments?
You can take advantage of the latest C++ libraries. Using the current C++ header scheme is also a good idea because some compilers may disallow the old headers by default.

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