Re: Objectizing C Code

Here's a brainteaser:

I have some legacy C code that I cannot modify for various reasons. I
would like to be able to wrap this code into a C++ class so that I can
create multiple objects to interact with.

To simplify, here's some code:

======================================================
foo.h (Can't modify):

#ifndef _FOO_H_
#define _FOO_H_

#if defined(TEST1) && defined(TEST2)
#error "Cannot define both TEST1 and TEST2"
#endif

#ifdef TEST1
#define OUTVAR 1
#elif defined(TEST2)
#define OUTVAR 2
#else
#error "Need TEST1 or TEST2"
#endif

extern int testInt;

void testFunc();

#endif

======================================================
======================================================
foo.c (Cannot modify):

#include "foo.h"
#include <stdio.h>

int testInt;

void testFunc() {
    testInt = OUTVAR;
    printf("%d\n", testInt);
}

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