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Date:	Mon, 16 Apr 2007 20:41:34 +1000
From:	"Chelton Evans" <cheltonevans AT gmail DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: C++ name with leading underscore character not Compiling
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Thanks for the language correction. However the compiler is braking.
Here is some of the code and the error messages reported in compilation.

I have tested this on two different computers and the same error messages were
 reported.  When I changed the _N to N or something else the
compilation continued
 on to the next error. Hence it is an underscore problem.

g++ -Wall -I. -I../misclib/ -I../graphicslib/ -I../mathlib/  -c
../graphicslib/graphmisc.cpp
In file included from ../graphicslib/graphmisc.cpp:3:
../graphicslib/graphmisc.h:561: error: expected `,' or `...' before
numeric constant
../graphicslib/graphmisc.h:570: error: expected `,' or `...' before
numeric constant
../graphicslib/graphmisc.h:574: error: expected `,' or `...' before
numeric constant
../graphicslib/graphmisc.cpp:232: error: expected `,' or `...' before
numeric constant
../graphicslib/graphmisc.cpp:256: error: expected `,' or `...' before
numeric constant
../graphicslib/graphmisc.cpp: In constructor
`gobjMyCircle::gobjMyCircle(doublec, doublec, doublec, uintc)':
../graphicslib/graphmisc.cpp:258: error: default argument missing for
parameter 4 of `gobjMyCircle::gobjMyCircle(doublec, doublec, doublec,
uintc)'
../graphicslib/graphmisc.cpp: At global scope:
../graphicslib/graphmisc.cpp:299: error: expected `,' or `...' before
numeric constant
make: *** [graphmisc.o] Error 1



/*!
\brief Sampled circle or ellipse.

This can be used in drawing circles of different sizes
 by gobjMyCircleDraw .
*/
class gobjMyCircle : public gobj
{
public:

  /** The number of sampled points. */
  uintc N;

  /** The samples x values. */
  float * const ptx;
  /** The samples y values. */
  float * const pty;

  /** General arcs can be created by changing the angle
     interval [theta0,theta1].  Ellipses can be made
     by changing the axis lengths.
   */
  gobjMyCircle
  (
    doublec theta0,
    doublec theta1,
    doublec xaxislength,
    doublec yaxislength,
    uintc _N=360
  );

  /** Create an arc. */
  gobjMyCircle
  (
    doublec theta0,
    doublec theta1,
    doublec radius=1.0,
    uintc _N=360
  );

Thanks for your response, I will think twice before using an
underscore, even though
 I do no agree with it being reserved. It is very important to have
programs that
 compile across other platforms.

Chelton Evans

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