Error with & crt/

General FreeBASIC programming questions.
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Joined: Aug 30, 2006 23:17

Error with & crt/

Postby markem » May 07, 2019 20:49

I decided to do a little programming with FreeBasic. So I downloaded it, installed it, and got out one of my old programs. Imagine my surprise when it got an error. The error was "unexpected identifier". Ok, took a while but I finally tracked it down.

It turns out that has a define in it:

#define M_PI 3.14159265 (and so on)

It turns out in the C library there is a similar define - only it is a constant:

const M_PI 3.14159265 (and so no)

The answer is: Put a #ifndef around the instance like so:

#ifndef M_PI
#define M_PI 3.14159265 (and so on)

Thank you - only took me about four hours to figure this out. :-)

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