Should this compile and link??

[Bill Priest <priestwilliaml@yahoo.com>]

c4e3.cc
---------------
#include "c4e3.h"

int main(void)
{
	TEST_TYPE test1;

	test1.f1();
}
----------------
c4e3_func.cc
----------------
#include <cstdio>
#include "c4e3.h"

void TEST_TYPE::f1(void)
{
	puts("c4e3");
}
------------------

c4e3.h
------------------
#ifndef C4E3_H
#define C4E3_H

typedef struct // TEST_TYPE
{
	void f1(void);
} TEST_TYPE;

#endif
--------------------

w/ stock g++ 3.0.3 the following commands

g++    -c -o c4e3.o c4e3.cc
g++    -c -o c4e3_func.o c4e3_func.cc
g++ c4e3.o c4e3_func.o -o c4e3
c4e3.o: In function `main':
c4e3.o(.text+0x11): undefined reference to `TEST_TYPE::f1()'

If I uncomment TEST_TYPE in c4e3 everything compiles and links
as it should.

If I change c4e3.cc to include "c4e3_func.cc" and change the command to
g++ -o c4e3 c4e3.cc
then it compiles and links even if the c4e3.h file is unchanged (ie TEST_TYPE is commented out).

This doesn't make a whole lot of sense to me; but I'm not a C++ expert or even novice.  
Neither of my books (Thinking in C++ and C++ for C programmers) seems to cover this explicitly.

Is there something I'm missing here.  Scoping or namespace resolution was the only thing I could
come up with but didn't see anything in either of the books.

Please set me straight,

Bill

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