Re: Compilation error with seperate compilation

From:

Richard Herring <junk@[127.0.0.1]>

Newsgroups:

comp.lang.c++

Date:

Fri, 15 Feb 2008 13:45:27 +0000

Message-ID:

<Z8FCq5L3dZtHFw+Y@baesystems.com>

In message <e85e2$47b58e93$89382996$13657@news2.tudelft.nl>, Ko van der
Sloot <Ko.vanderSloot@uvt.nl> writes

Keith Halligan wrote:

On Feb 15, 11:30 am, C__chp <nheilig...@chello.nl> wrote:

the compiler is marking an error at lines

vector<string> v;
and
string line

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

implementation cpp file: adfile.cpp
#include "adfile.h"
#include <string>
#include <iostream>
#include <fstream>
#include <vector>
using namespace std;

You aren't including the headers for the stl vector and string in the
class's header, so it doesn't understand what a vector<string> is

And the solution is .....

move #include "adfile.h" 5 lines down, after #include <vector>

No, it's to put both "#include <vector>" and "#include <string>"
*inside* adfile.h, and to prefix all occurrences of "vector" and
"string" in that file with std:: .

Since adfile.h refers to both "vector" and "string" it's only courtesy
to the reader (and the compiler ;-) to explain what they are supposed to
mean. Relying on the user to include headers in a particular order is
not a robust solution.

--
Richard Herring