Subj : template problem
To   : borland.public.cpp.borlandcpp
From : "news.telus.net" <seanchen@telus.net>
Date : Tue Nov 25 2003 07:03 am

Hi,

I came across the follow code:

    template< int order >
    class Matrix {
      public:
        class Row
        {
          public:
            Row( Matrix* _matrix, unsigned int _row ){ matrix = _matrix; row
= _row; }
            float   operator[]( unsigned int col ) const { return
matrix->element( row, col ); }
          protected:
            Matrix*         matrix;
            unsigned int    row;
        };
      public:
        Matrix();
        Matrix( float* data );

        float       determinant();
        Matrix      transpose();

        Matrix      operator+( Matrix &m );
        Matrix      operator-( Matrix &m );
        Matrix      inverse();
        Matrix      operator*( Matrix &m );
        Matrix      operator+=( Matrix &m );
        Matrix      operator-=( Matrix &m );
        Matrix      operator/=( float &s );
        Matrix      operator*=( float &s );

        Row         operator[]( unsigned int row ){ return Row( this,
row ); }

      public:
        float       element( unsigned int row, unsigned int col );

      public:
        float       elements[order][order];  <--- compile error here
    };

I guess the code is originally compile with VC. When I compile it with
Borland C++5.02, I have a compile error at

float elements[order][order];

error message is : Array must have at least one element.

I compile it with open watcom but don't get this error. Any suggestion to
get around this error?

.